During a school production of The Roses of Eyam, a tragedy about the Plague in medieval Derbyshire, I was playing the towns madman/soothsayer called Bedlam. In one of the more tragic moments in the play, where the Vicar was trying to commemorate the lost and giving hope to the families during a cold and painful winter, I decided to play with his feet, tongue and nose in the background. This got such a laugh that during the second night the director had choreographed moves.

I was in a high-school production of Macbeth as the titular character. As I was strolling onto the stage, the Witches were supposed to screech at me, with a computerized squealing in the background to add to the effect. The squeal, however, went off too early. I looked around, stabbed my sword just off-stage, and muttered 'Freakin headcrabs.' Nobody in the audience got it, but the cast and crew couldn't stop laughing. Guess what line was added to the rest of our run?

I was saved from a rather unfortunate ThrowItIn. I was playing a jester called Yorick in Don Nigro's RobinHood. In the scene, Yorick gets hiccups, puts a bag on his head, and suffocates to death. So I, on closing night, put the bag on my head, stumbled around stage, turned around to fall over dead, and, on the way down, hit something fleshy. I FELL INTO THE AUDIENCE, OFF OF A 4 FOOT HIGH STAGE. When the scene ended, I got up, walked outside, and laughed. The director said, "If only you'd done that on an earlier runthrough..."

I have had my forcefully kissed by a conman, in a play. The first time we rehearsed, he went over the top and LICKED my hand and would NOT let go. When I tried pulled it away, the others laughed, and it became part of the scripted.

I played the Groucho Marx role in a stage version of ''Duck Soup''. In one scene, he is locked inside his room and bangs on the door for about 10 minutes before getting it open. In rehearsal having realised that the door opened into the room and I was slamming my shoulder into it as if it opened out, I yanked it open and ad-libbed 'Aha! It's a pull door!' It got a big enough laugh that we kept it in for the performances.

I did this in a play about a game show starring serial killers. Because this play was completely over the top, my role was about a man who ate cats. While rehearsing, I was supposed to introduce myself and say what crime I did, then go behind the stage. When I did so, I was laughing hysterically and (since I was eating cats, of course) threw in an extra "MEOW" every now and then. The scriptwriter liked it so much we used it.

I have seen and participated in dozens.

Juliet, on her deathbed, holding the crypt up on one hand.

During a performance of A Midsummer Nights Dream, Quince left the backstage area during Pyramus and Thisbe to take a bow at the wrong time. Left in thanks to comic potential. Bonus points because I did exactly the same thing in the main play, by accident.

A completely ad-libbed, random dance during downtime in rehearsals was added.

In the same production, I managed to bring a mic-stand collapsing down around myself in a song, and it was added.

In ''Oliver'', Bill Sykes was shot too soon, and had to stagger to the exit, with the line "ooh, I've bin shot!"

When I was a kid, my brothers and I made a home movie. During filming, an off-screen picture inexplicably fell off the wall and shattered -- right when there was supposed to be an explosion. Compared to the script which called for the cameraman to make "boom" noises, the sound of breaking glass was quite an improvement.

A friend and I were filming a fake news report for science class in eighth grade. We happened to be outside at about 10 PM, and we didn't notice there was a frog croaking at us in the background until we'd finished. Naturally, it was so funny we kept it, and named the frog Fred.

Tropers/{{Pirka}}: During a production of ''Macbeth: The Musical Comedy'', I was given the role of Banquo. During the scene where Banquo's ghost appears at the banquet, there was a musical number called ''(There's A) Ghost Eating Toast'' which consisted of Macbeth and two random lackeys singing about the ghost...but the ghost (i.e. me) had nothing do do during the song part of the scene. During one of the rehearsals I started beating on the metal dishes and throwing cutlery around during the song due to boredom, which the teachers/directors then told me to put in every time.

I was playing the Stage Manager in a high school production of Thornton Wilder's ''OurTown''. Since the play has a fairly close audience-narrator relationship, I got to go crazy on the second night, scolding audience members for arriving late, taking photos, and keeping their cell phones on despite being asked to turn them off at the beginning of the play. The ThrowItIn moment came when the director told me during intermission to keep doing it whenever possible, since he'd noticed the audience beginning to listen when they were told off.

Averted in real-life! In field rehearsals and performances of a MichaelJackson-themed field show, I improvised a few Jackson-styled vocals during the drum beat intro to "Billie Jean". At the end-of-year recording sessions, the band director twice stopped the band upon hearing the ad lib, as the monitor headphones finally enabled him to take notice. Despite the humorous revelation by the band that my voice talents had become a fixture of every performance, the final recording was made without any unwritten additions.

I played the game show host in a high school production of ''Reckless''. During one rehearsal, as the scene came to a close, I whipped my shirt off and ran across the stage screaming. At the time I just felt like it, but it got such a big laugh from the others in the room and the character was rather wacky already) that the director kept it.

My high school had a running gag that started as a thrown-in. According to the school legend, during one Sunday performance long, long ago, someone forgot their line, and ad-libbed something about "The great leaping genius Lanny Poffo!" Since then, the Sunday performance of every semester production, among other traditional inside jokes, has a Lanny Poffo mentioned somewhere, whether it's a previously unnamed person getting named that, someone calling to some "Lanny" offstage, or a previously unnamed drycleaners being named "Poffo's" (I was responsible for the final one).

I was on tech for a slightly modernized version of A Midsummer Nights Dream and when Pyramus killed himself on the last night of production, he used a lightsaber supplied by me. And when Thisbe was supposed to take it try and kill herself, the actor held on to it for a little, saying in a loud whisper "No, I'm the only Jedi out here!" Everyone cracked up. The director liked it so much that he's including all of this in the comic book a adaptation of this version of the play he's doing.

I was in a production of ''Much Ado About Nothing''. During Dogberry's "I am an ass" rant, the actor punctuated the line "I am an officer!" by accidentally ripping off his policeman's badge. For a split second, everyone just stared, then the scene continued as scripted. The director and cast loved it so much that it was used in the rest of the performances.

I have done a few improvisations that were otherwise left in plays I was performing in:

While working on a production of ''Rhinoceros'' as Botard, there was a line in the script originally written as "And it's all very dubious." However, I blurted out "And it's all HORSESHIT!" So as to add comic effect. The student director loved it so much it was left in.

Done again during ''TheRealInspectorHound'', during the scene where Moon is rattling off a series of brilliant authors, I sandwiched in the name TomStoppard. The director like it and left it in.

My father once watched a radio drama be recorded. After the protagonist declared he was going to shoot the villain, someone messed up the sound effects, so instead of a gunshot, a cow was heard, to which the actor promptly added "...and it's no use hiding behind the cow!"

I was a sound tech through junior high and high school, and I ran into Throw It In moments during a junior high production of ''MaryPoppins'':

The tape we had of the parrot umbrella's voice broke right before curtain, so I ad-libbed the scene. Worked so well, we didn't bother replacing the tape.

The kid playing Mr. Banks was something of a gymnast, and after being dismissed from the bank, did a back flip over the boardroom table while singing "Supercalifragilisticexpialidocious." The stunt got such a great crowd reaction that it was included in all future shows.

Our stage featured stairs down the sides of the apron that were juuuuust off of normal dimensions, and during rehearsals, the girl playing the playwright who continues to edit her script throughout the play-within-the-play's rehearsal period is wearing awkward boots during a rehearsal. Even though her sprain had healed by opening night, we kept the cane and the hobble.

I was costumer for "Long Live Rock And Roll" in high school. When the Country Girl slapped the city boy on his arse, the sound effect (done by smacking a metal crochet hook on a piece of wood) was suppose to happen at that instant, but the person who was suppose to do it missed his cue and did it three seconds too late. The crowd found it so hilarious that it was kept in on subsequent nights.

I was in a production of ''{{Macbeth}}'' where one of my (notably flaky) friends played Macduff's son. On one night, he forgot what to say after being stabbed by the assassin, so he opted for "Mother! I am killeth!" The cast and crew loved it. The avant-garde (read: delusional) director? Not so much. He consistently said it at every performance after that.

While going over ideas for our (as of yet unproduced) internet talk show with my friend, I ad-libbed the line "[Random dumb person] needs to get a taste of brick to the face" as part of a mock scenario. Something clicked, and with a few modifications, the aforementioned brick has become my signature instrument of moron beatdown in my official rant segments.

In high school, I was in a production of ''The Wiz'', and one of my best friends had a one-off bit part as a Winkie who drags a trembling messenger into the court of the Wicked Witch of the West. He would drop the messenger and announce, "Oh, most wicked Majesty! The messenger has arrived!" During the final dress rehearsal, he stole one of the helium-filled balloons from another scene and sucked in the helium so that when he delivered the line, his voice was all high-pitched and squeaky. Rehearsal was suspended for ten minutes so everyone could get over laughing their heads off, and the director loved it so much he insisted it be done in all four performances.

My boyfriend had an assignment to write and film a five-minute movie within the space of a weekend. There were a few other requirements, as well, and we ended up with a movie about a sci-fi club where everyone cosplayed. Needless to say, it was awful, and a lot of improv took place. One of the more notable things was when one guy's Storm Trooper costume had technical difficulties: the codpiece kept flipping upward. Naturally, an added line was "And fix your codpiece!" Also, all of the club members were shot at the end (have you realized yet that this wasn't a terribly coherent plot?) and the actor playing a Darth Vader cosplayer did his "Noooooooooo!". Then he collapsed and made a sound of true agony, as he had hit his head on an out-of-frame treadmill.

I was once played a part in a haunted house; I was stationed in the room at the end of the maze, where my job was to stall guests until there were four of them, and then send them out as a group. Two of the gimmicks for the room were a coffin propped up against the wall with an actor in it, and a plastic "window" to a part of the maze. I was supposed to stand up against the "window" as others approached (it was supposed to be a living portrait thing). This didn't work too well, thanks to my ninja-sorcerer costume, so I instead positioned the actor in the coffin there instead. Said actor's Dracula cape rendered him effectively invisible to everyone in the room; the coffin was left open. I would stand in front of the open coffin, and when it was time for the guests to move along, the actor would shove me into the coffin and slam it shut. Everyone agreed that this was much funnier.

I put on a production of ''NoisesOff'', a play about a play about a play that's... pretty much about this trope. At one point, a plate of sardines that was supposed to appear (which was supposed to have appeared five minutes before and disappeared and be subject to several other layers of impossible to summarize meta-existence) and a crew hand had to army-crawl across the stage to put it in place as inconspicuously as possible. She failed, of course, but the audience loved it (and most didn't realize it wasn't part of the play) and the director told the ingenious stagehand to do it again the next night.

I was a tech for a high school production of ''Noises Off''. We included the silent role of a tech for the play-within-a-play who wanders around the stage with a fully-stocked tool belt. Thus, when one of the doors to the complex set got stuck mid-performance (causing an actress to have to retreat into what should have been a closet, and then emerge later from the bedroom) the silent tech was there to fix it. The audience was none the wiser about any of it. Also, during our second-to-last performance, the accident-prone actor playing Gary Lejeune managed to tear a heavy frame off the wall while throwing himself down the stairs. The frame landed on top of him with perfect comedic timing. The director asked the techs if it was possible to reproduce it for closing night.

I once helped with props for a rather meta version of ''MyFairLady'' (near the end of the play, at Higgins' line "I don't need anyone!", the orchestra conspicuously began putting away their instruments). Most of this was planned, but the Queen (played by the director's six-year-old daughter) had a tendency to forget her crown, and it ended up getting passed around from backstage by the ever-present Cockney extras who played the role of a sort of Greek Chorus in every scene. After the second time, it became a part of the script.

I was playing Puck in ''A Midsummer Night's Dream'' last year in a school production. After being summoned by Oberon during rehearsal, I tripped over one of the stage props, landed on my ass, and did a backwards somersault. Despite the bruising it cost my backside, the theatre instructor liked it so much that he scheduled a couple of basic gymnastics classes for me with a private instructor.

I once did a production of ''Into the Woods'' in which the princes decided to move around the stage by prancing. The director liked it so much that she kept it for the performances. But that's not the best part...The second night, Rapunzel's prince falls out of the tower, does a backwards somersault, gets up, claws at his eyes with his hands, shrieks in agony, and PRANCES offstage. The audience loved it, and the narrator ended up completely losing his composure and cracking up.

I was recently the director of a production of ''ZAP'' (haven't heard of it? Don't feel bad), in which there is a scene where a decadent southern family (consisting of a wanderlusting watercolorist, his hick father, his drunk sister, and his drug-hyped stepbrother) has just discovered the matriarch of the family dead. The sister suggests that they look for her will to make sure they get some of her fortune, and the actors were blocked to run off stage. In one rehearsal, not only did the watercolorist forget his suitcase on stage, but the druggy tripped while going behind the couch and fell. The druggy stood and stared out for a moment before the watercolorist returned for his case. They shared a glance, and then ran off. I liked it so much he Threw It In.

My high school production of ''The Wizard of Oz'' was chock full of these. Our director is known for making massive changes to stage directions and characterization in the first place (Auntie Em, for instance, was supposed to be from Brooklyn), but this went even beyond that. During one rehearsal, the guy playing the lead flying monkey decided, out of the blue, to play him as the disgruntled employee type, meaning that he walked upright, read the newspaper, smoked a pipe, and, when the Wicked Witch commands the monkeys to "fly", he pulls out a set of keys and uses the keyless entry remote to unlock an offstage car. The Winkies (I played the Winkie General) came up with a goofy dance to do to go along with their Yo-ee-oh chant, prompting the Wicked Witch to ad lib a comment on it. I then replied, "Talk to the new guy," and pointed at the shortest Winkie, who had found a rainbow belt to wear. And finally, during the scene where Dorothy and the others meet the Wizard, the pyrotechnics malfunctioned and lit the Wizard head on fire (our head was a hologram projected on a sheet of muslin). The guy playing the Wizard got so freaked out that he sprinted out of his booth and offstage. The Lion immediately deadpanned, "Something is not right here." As if this wasn't enough, the guy playing the door guard ran out with a bucket of water before stage crew could interrupt, and put the fire out. The director loved it so much that we kept it, albeit with a more controlled flare-up.

I was once part of a murder mystery play's cast and was the one to discover the dead body. On opening night, when I discovered the "dead" actor in his wheelchair... I grabbed him around his throat and shook him like a rag doll while hysterically screaming his character's name. Guess what happened on subsequent nights?

Two events happened in my high school concert band.

One of our Pep Band pieces was, ''Can You feel the Love Tonight''. Two guys who had rests during the first half of it during the first practice proceeded to do ''perfect'' Timon and Pumbaa imitations to it. This was kept for performances because it was that awesome.

When practicing entering the auditorium for a concert (there was no way there was enough backstage room for the entire band, so we had to enter from the audience entry) the bass player (he just used an electric guitar) had finished setting up his stuff on stage to wait for the rest of the band while the rest of us were still working out lineups. In his boredom, he starts playing the intro beat to ''Stand By Me''. After the appropriate number of repeats, most of the band has already been snapping along to it, and about half of them start singing the song. Our band teacher liked it so much that she made it our ''official'' entrance for the concert.

In a professional performance of ''Twelfth Night'' done at my college, we had one guy playing most of the small parts. He tended to quickly change hats, cloaks, and maybe boots. Well, at one point he was supposed to come in as a guard and instead came in as the priest. This led to him stripping off the hat and cloak ''on stage'', and just stand there grinning at the audience. It took a little time for Orsino to get his composure back. It then became a running gag in that each time he'd come on stage he'd be wearing the wrong hat and a stagehand would run after him with the right one.

I did props for a Restoration comedy that had a similar device of having one actor play all the small parts, including drag as a maid and a doula. One night at rehearsal for the last scene, the actor accidentally left the mustache from one of the previous parts on when playing the doula, and the director had him leave it in, including the confused reactions of the other actors and the 'doula" ripping off his mustache and grinning sheepishly at the audience.

My yearly community skit show had an extremely tall, robust guy and a small, wiry, old-but-limber woman, both equally hilarious friends that crossdressed to re-enact Sonny and Cher's "I've Got You Babe". At the end of the song on opening night "Cher" picks up "Sonny" in a bear hug and squeezes a bit too tightly, popping one of the balloons in his dress. Followed by the two sharing a stunned look and Sonny piping "Save the tatas!" with the most profoundly funny comedic timing ever. The extra boost for breast cancer awareness was, of course, kept for the remaining shows.

I recall a private series of random videos on my phone where I talked about things. At one point I tried to turn off the phone camera without moving it, but accidentally knocked it over, panicked, picked it up and turned it off. The result was that the video ended in the camera apparently flailing about. It was just too funny not to leave in. Another example, I wanted to end the video on something funny, so I grabbed a random object and slammed it in front of the camera. The object happened to be an Indiana Jones potato head with a musical hat. Meaning the video went- "THUD" *giant potato head* "Dundadun dun! Dundadun... Dundadun dun! Dundadundun dun!"

Ah. School plays. I played as "Uncle Crumble" in "Uncle Crumble's Mad Machine" and I was basically a mad scientist who had invented a time machine. My costume consisted of "That looks weird, let's go with that!" and my first line was supposed to be "Good evening everyone!" but it turned into "Good even-" *THUD* "...I'm OKAY!" as the trousers I'd chosen were big, baggy and very slippery. Of course I had to do this twice over for the real performance.

Tropers/FearTheWolf: In a rare example that's not from theatre, I spend a lot of time drawing. My main character, Silva, a woman with extensive cybernetic repairs only became like that because when I first started I wasn't very good and couldn't get her arm to look right. So, as I was using an artist's mannequin to help, I decided to draw specifically what I saw in front of me, so I could use it as a frame work. Except what happened was that I drew that, took one look at it - and decided to leave it like that, giving her a cybernetic arm. She proved really unlucky though, because she then got a cybernetic leg to go with it.

Tropers/{{Gabel}}: I have had my fair share of these. When making a short about the American Revolution, I included a fair share of these. For example when running through the house the actor (Johan) playing John Johnson slipped on the floor and was about to fall, pulling a hilarious face towards the camera. The second time was during a scene where he forgot to pull his gun. Then the other actor (portraying "Goerge Washington") tells him (in Swedish!) to draw his gun. Johan then looks confused at it and then draws it.

I have a couple as a high school techie. The first came during ''School House Rock Live'', when the tech crew would briefly appear onstage to hang a sign with the name of the song that just finished. The director told us to acknowledge the audience with a little wave or something. One techie, well known for his many and bizarre hats, instead made an elaborate bow, complete with sweeping the hat off his head. The director loved it, and we got to ham it up for the other shows.

During ''A Midsummer Night's Dream'', Jonny was given the role of Starveling as a test during callbacks, and the description had him listed as a "gay tailor". Everyone knew the meaning, but as a joke, Jonny played Starveling as FlamboyantlyGay, and the sponsors liked it so much it was left in, culminating in him and Bo, who played Bottom, running onstage during one of the last rehearsals for bows after the production of ''Pyramus and Thisby'' and kissing, leading to everyone (except Starveling) running away and screaming in horror. This too was kept in.

The ad-libs continue. The school just did ''AliceInWonderland'', with me playing the Caterpillar. For the final scene, most of the characters (aside from Humpty Dumpty, the Cheshire Cat, the cards, and the Caterpillar) all stand on stage at a banquet and take turns reciting lines from a poem to celebrate Alice's inauguration as a new queen, before the White Queen announces that "something is going to happen!" and everyone, knowing her powers of prophecy by living backwards, starts screaming and running around. For fun, the Kvave of Hearts encouraged the guys to start rapping the poem in the dressing room, and they presented it to our sponsor, Mr. Eissele, after one rehearsal. As a joke, Jonny (the Mad Hatter) asked if we could include it, and the straight-shooting, conservative man responded "Sure, why not?" In the end, after the first two lines of the poem, the Knave shouted "Yo Dormouse, bust a beat!" and the Dormouse begins beatboxing as everyone dances. The Mad Hatter calls himself the "Mad Hizzle" and starts off the rap. I was originally absent from the scene, but also got the chance to come on as the rap began, and decided to moonwalk across the stage to my position.

Another from my Acting class, this time a year later. My group song was "Pandemonium" from ''25th Annual Putnam County Spelling Bee'', with me singing for Chip. During rehearsals, the original blocking was that the students would pull Mr. Panch from his chair and do a ring-around-the-rosie around him as I sang a series of long, very loud notes off to the side. While rehearsing outside to be in a quieter area, the area was a bit small and they promptly smashed Mr. Panch into a pole while pulling him to the center. Someone made a joke about beating him up instead, and everyone agreed to replace the original blocking with the kids all kicking the crap out of him.

During a childhood play of ''Romeo and Juliet'', I managed one I tried to replicate but never really got it right. It was the scene were Romeo kills Tybalt and Tybalt kills Romeo's friend. He who played Romeo played him drunk with love and even threw a rose at me as Tybalt, all according to our script. I cut it with my sword and it fell to the floor. When I was cut by Romeo I dropped the sword over the rose making them an X on the ground. Our light-man even put a spotlight on it.

My group of high school friends once decided to make a short ''TheBlairWitchProject'' parody with a camcorder in my backyard. Towards the end of a scene, you could distantly hear my mother on the porch yelling "Dinner time!". We thought it was such a perfectly incongruous thing to hear during a movie where the main characters are supposedly lost and starving in the wilderness that we left it in with no explanation.

Tropers/DaisyChain: I once went to see my high school's production of ''Grease'' on the opening night. Possibly the shows CrowningMomentOfFunny occurred during the scene with the leads sitting in the car at the drive-in when the actor playing Danny turned to his co-star and said "I really like you Sonny *pause* Sandy." I was informed the next day by the girl playing Sandy (who was in my English class) that it wasn't, in fact, in the script but that they were going to try to keep it in anyway.

I was recently in a high school production of ''The Trysting Place'', in which I played an old widow being wooed by an old flame. At one point, said old flame, Mr. Ingoldsby, proposes. During rehearsals, the actor playing Ingoldsby is in the midst of proposing when he decides to tie a shoe, as we are about to have to jump up. As he gets on the floor, he puts his hand on my leg to steady himself. Ms. Director Lady thinks he is getting on his knees to propose, and applauds his improv skills. It remained in every performance we did.

During my high school performance of ''Dracula'', a handmade chaise lounge was having some issues, mainly slowly lowering and cracking whenever it was in use. This was noticed at an inconvenient time, so all that could be done was warn Dracula and Lucy to be careful during their "romantic" scene. It did survive that scene, but no one warned the Van Helsing and his vampire killing friends - It completely collapsed when they threw Dracula on it during the fight scene, and the floor mounted smoke machine meant that no one could see Dracula disappear, as he was on the floor already. It was seriously bad ass, and a friend rigged it to do the same the closing night.

I was in a production of ''Urinetown'' with a Throw It In involving Hot Blades Harry. One night, in the line where Hope declares that everyone has the right to pee for free, "regardless of race, creed, class, or criminal history," on "race" she turned to Hot Blades, who was played by an African American student, and gave him the Black Power fist. He rolled with it, giving her a disgusted look and walking off. The audience loved it so much that it was kept for all later performances.

I was in a high school drama club production of ''{{Grease}}''. In the "Summer Nights" scene, the actor playing Sonny was supposed to try to give a high five to Danny when the latter first walked on stage. Danny was supposed to fake him out. One rehearsal, when they ran through that scene, after faking the high five, the actor playing Danny milked the fake by tripping Sonny, creating a riot of laughter on the stage. The director decided to keep it in as a part of the scene, much to Sonny's dismay.

In my school play in 2006, there was one scene where a dance competition is taking place and two (uncoordinated, nerdy) main characters win by injuring all the other competitors in their wild dancing and literally knocking them off the dance floor. At the end of the scene -- which was also the end of a long disco medley -- as rehearsed, everyone was supposed to be just standing off to the side and applauding the two main characters as they get their trophy. Well, it occurred to me that this was unrealistic and half-assed, so on the first night when the music stopped I shouted out "YOU CHEATED!" as loud as I could. Some of the other members of the chorus did the same; on subsequent nights, most of the rest of the chorus did the angry-shouting thing too.

My senior year play was an original piece by one of my classmates where Death tells his life story to a victim attempting to stall for time. Death's first job was a coroner's assistant, with yours truly as the coroner, portrayed in LargeHam MadScientist fashion. At a script meeting, I suggested having the coroner start munching on a candy bar in the middle of an autopsy in order to add to his weirdness. Then, during the live performance, while Death is sewing up the corpse, I poked its chest with the candy bar, said "You missed a spot", and went back to munching without missing a beat. Afterwards, the director/author/Death said "Do that again when we perform this for the parents."

I was the foreign character in a production of ''12 Angry Men'' and decided to play it Irish (my pasty white skin doesn't lend itself to many other choices). At the end of the first act when one of the jurors starts to physically assault another, I was to jump in between them to stop the fight. On opening night, fully immersed in the character, I blurted out "Easy there, laddie" to the angry juror. The actor playing him was taken by surprise and even dropped character for a second. He quickly recovered, but once we were off-stage, he and several of the other actors busted up laughing and insisted that I should keep that line in every night.

I have had some moments I threw in during some performances for theatre/video classes.

Years later, in my Acting 1 class, two things happened that I threw in. Once, during an exercise involving Tag and improvisation, I came up with a very creative idea. If we are tagged, we have to act out a way of dying. When I was tagged, I pretended to chop off my head, pulled my shirt up over my head and fell to the ground. Everyone laughed. Then, for our final project, we had to act out an excerpt from a play. The character I was playing was suffering from a breakup and trying to gorge myself with food. My partner played her drunk roommate. She threw in some added hiccups during the live performance and as for me... I overacted a lot. One bit involved me to scream that there was no food in the apartment. When that came up, I practically screamed at the top of my lungs, shaking two empty boxes of food in my hands. This startled my partner during the first couple of tries, so we kept it in.

I worked on a children's theatre production of ''Bye Bye Birdie'' one summer. During the final dress rehearsal, Randolph couldn't find the slingshot prop he was supposed to hand to his father with the line "I couldn't find your gun, so I got you my slingshot!". He runs onstage and shouts "Daddy! I couldn't find any weapons in the house, so I brought you this spoon!" and presents Mr. MacAfee with someone's plastic spoon from snack time. It was so funny that the stage manager, lighting technician (me), sound technician, and assistant director demanded it be left in.

I was in a high school theater production of ''42nd Street'' as Mac, a minor character who is nevertheless present during many scenes. During rehearsal of the on-stage kiss between the director character and the actress character he is trying to inspire, the director of ''42nd Street'' kept ordering them to take it again. I was getting rather sick of hanging out upstage watching, so to mess with everyone, I improvised a wolf-whistle. The director thought it was hilarious and left it in.

I was in a school production of ''Urinetown'' the musical. During one scene, a rich woman was carried kicking and screaming offstage. Unfortunately, her shoes fell off, 30 seconds before dancers were supposed to come on. In order to rescue them, she threw herself back onstage, grabbed the shoes, and flailed as she was dragged back off by her feet. The audience loved it so much it was repeated for the rest of the shows.

My drama exam gave me an opportunity to make good use of this trope, the most prominent being one of the opening scenes where there was some news show director/producer and screwed up a line, in rehearsal, by using the word break instead of commercial. After being corrected by a in-character fellow actor, I responded, in character myself, by indicating my crotch and shouting the line "Blow Me!" without even looking at the other actor. I then continued on with the scene for about 3 seconds before joining the rest of the cast in laughing. It was decided the line would be kept and became one of the funnier jokes in the performance.

My brother and I both had stage roles in our distant pasts. My brother once played a part of a psychopath in a comedy, one who found himself trapped in the living room, surrounded by people he didn't want finding him. He could have ducked into a closet, as the script demanded. Instead, he plucked the lampshade from a lamp and stood beside the door, stock still, for the rest of the scene. Every showing thereafter, he did the same thing. He did this initially because he knew he wouldn't make it to the closet before the other actors entered the set. As for me, only a complete ThrowItIn by the entire cast saved the musical he performed in highschool from being a dismal failure.

My High School Drama director was best friends with a playwright, who let her use one of his new, unpublished plays for the production. There was a scene involving some pie in the face that was very messy, and on opening night, the guy playing the character who was hit slipped and fell. Everyone in the audience laughed; everyone on the crew panicked, thinking he'd slipped on the whipped cream. Most of the cast reacted in character; I believe I ignored it, as my character likely would. Later on it turns out the actor playing the character staged it, and the original playwright--who was in the audience--decided to write the pratfall into the final version of the script.

Tropers/MikeK: Years ago I decided I was going to make an "album" in my basement with a tape recorder, despite questionable musical ability - mostly I was recording things on midi, then setting up the tape recorder, and playing the midis back while recording vocals, guitar or whatever else to cassette. It was all pretty improvisational and had plenty of mistakes in it, but my favorite example was something completely out of my control contributing to a song's ending: towards the end of a track, the phone started ringing as I was recording, so I ignored the phone so I could finish up my part, then finally picked up, realized it was still recording, then quickly hit the stop button. I decided to just go with that rather than starting over again.

In one dress rehearsal of ''RomeoAndJuliet'' I was in, one character tripped backwards during the big fight in the opening scene and broke his wooden shield into three pieces breaking the fall. Everyone agreed it was such a good touch that we just put it back together with hot glue after every performance so it could be smashed over and over again.

My high school show choir once incorporated the "Crank Dat" dance into an adaptation of Jingle Bells, of all things on the completely not-at-all serious suggestion of a certain member of the choir, who had a long-running habit of playing jokes on the choir director. The director didn't realize it was supposed to be a joke, and (since it did fit reasonably well with the song) went with it.

I was inundated with these during my high school days, the actors would change names from what was written to the names of other students (usually other actors) and more often than not, they were appropriate enough to be kept. A crowning moment of ad-libbing was during the production of ''42ndStreet'' when several girls were lamenting the orchestra and making fun of the pit, the entire pit decided to shout "Hey!" in response, the night before we opened. Everyone cracked up and it got tossed in.

Tropers/KingSonnDeeDoo: A couple of years back, I was acting as a stand-in in my village's annual {{Pantomime}}, for someone who wasn't going to be there for a couple of performances. At one rehearsal however, the person I was acting as a stand-in for and I accidentally spoke one of our lines in synchronization. The director liked it, made the character in the panto have a twin sister, and from then on (except for the performances where the other person wasn't there) the two of us had to speak in sync.

At the age of eleven, I was in the kids' chorus of a local production of ''JosephAndTheAmazingTechnicolorDreamcoat''. During one dress rehearsal, we heard, at the end of one song, the orchestra adding a few recognizable notes from the title song of ''JesusChristSuperstar''. The director loved the AndrewLloydWebber MythologyGag so much that we kept it.

My church drama group has put on AChristmasCarol for several years. During the first year's rehearsal, in the scene where Fred and his party guests are making fun of Scrooge, the actor portraying Scrooge got in the guests' faces, mimicking their movements. We all burst out laughing, and it's been kept in each year since.

Tropers/{{Turtleducks}}: I have finished one high school play and am currently in another that is in production. The first play was ''SoundOfMusic'', in which we realized that the girl playing Maria didn't have enough time for her quick change, resulting in the guys playing Uncle Max and Kurt improving a scene, which featured Kurt stomping off like the upset little boy he was supposed to be. It got enough laughs that we left it in for the subsequent nights. This year, we're putting on ''The Big Bad Musical'', a "court room comedy" about the Big Bad Wolf's trial, which has a ThrowItIn ''character'': a bailiff who's a gingerbread man. The role originally belonged to me, but I was promoted so they got a new guy to play it. He speaks in a ''very'' high-pitched voice and is pushed over at one point, struggling to pick up the book of fairy tales that serves as the Bible to swear in the witnesses. The director decided that that character is officially her favorite. Other ThrowItIn moments so far have included having our resident CampGay hitting on my very modest friend, increased stupidity for two of the three Little Pigs, and any and all of the character tics for the characters in the gallery. It's going to be ''awesome''.

I was in our high school's production of Aida. During one of the scenes with the Pharaoh on opening night, the actress playing the slave giving the Pharaoh some wine accidentally sneezed. The actor playing the Pharaoh paused for a moment, then responded with "Take her to the Pit of Despair." From every show onwards, the actress, who could fake sneeze incredibly well, would do so and the Pharaoh would invent a new punishment for her.

I have been in several shows with a director whose CatchPhrase is "I like it! Leave it in!" The most recent one was ''ThePiratesOfPenzance'', in which probably half the business consisted of throw-ins:

During the first dress rehearsal, the Pirate King improvised a bit of business in which he distracted the Major-General and stole his monocle. Unfortunately, the monocle was attached to another bit of the Major-General's costume, which left the Pirate King with an empty hand and a confused expression. That bit got repeated every night.

Immediately after Frederic sang the line "Ladies, do not shun me," playing Edith, I snapped her parasol open at him like a shield. It got kept, as well as Frederic's look of shocked amusement. (In rehearsal I also did the classic "yess!" fist-pump during the finale, when the Major-General announced "And take my daughters!" The stage manager laughed and the director didn't complain, so I kept doing it.)

At the first tech, one of the pirates jokingly put a plastic lobster on stage for the first act. The set crew kept it.

Running jokes during rehearsals led to one of the pirates intercepting the pianist at gunpoint and playing the overture instead, complete with improvised cadenzas that got longer every night, another pirate holding up a portrait of Shakespeare during "Hail, poetry" and conducting by tapping his fingers on the side of it, and the entire women's chorus rolling their eyes all through "Poor wand'ring one."

I belonged to a Shakespeare troupe in high school that was particularly fond of ad-libs that usually stemmed from misreadings of the script. For instance, while once rehearsing King Lear, the script called for Lear and Kent to 'grab sword' right before Kent spoke. Lear's actor for some reason thought this meant grabbing KENT's sword, and the two reached for the same sword at the same time, then wrestled for it for a few seconds. It was awkward and out of place in a very tense scene, but somehow worked and kept the scene from being too dark, and was kept in.

In a rehearsal of ''A Midsummer Night's Dream'', during Bottom's introduction to Titania's servants, Bottom's actor had just gotten back from a gym class, and was particularly sweaty. Cobweb was supposed to touch him on the shoulder, but when she did, she immediately recoiled in disgust because his shirt was damp. This fit in with the idea that the rest of the fairies considered Bottom to be a monster, and so it was kept in, and the other fairies would recoil in disgust whenever Bottom got near them for the rest of the show.

During a performance of the final scene of Two Gentlemen of Verona, Valentine was 'hiding' from Proteus and Silvia by sitting in the center of the stage holding a sign reading 'I am a Shrubbery'. Proteus was lustfully stalking Silvia around the stage. Right when he was supposed to attack Silvia, he tripped over Valentine's leg and fell on his face. This was intentionally kept in the following performances.

I once saw a high school version of ''Zoot Suit''. During a jail scene, Alice was supposed to rattle off a list of things she hated about Mexicans, and end with 'and I hate those damn Huevos Rancheros!', which was supposed to defuse the argument. Without telling anyone in advance, she changed the line to 'and I hate those damn Rancheros with Huevos!' Henry sputtered for a few moments before correcting her, and then cracked up because he wasn't expecting the line. It was kept in for every show after that.

Tropers/{{Tombcannon}}: BilingualBonus[=/=]DontExplainTheJoke: "and I hate those damn farm hands with testicles!"

I recently played Beadle Bamford in ''Sweeney Todd'', and we had mini-calzones made for meatpies. During one performance, in the scene where Beadle slides into the bakery and scares the bejebus out of Toby, the child playing Toby accidentally hit me with the pie. A few shows later, because the crew up in the balcony got a good chuckle out of it, they told Toby to "throw the pie at him", and he did so, but according to the crew he did it as if it were a "Heisman spike".

Non-theater example: After using "Bird Girl" as a placeholder name for my superhero, I decided to keep leave it in when NaNoWriMo rolled around, and then realized that the name actually fit the tone of the story and characterization of said character.

I have a WebComic that is very close to being a FanWebComic in the works, and I've recently been trying to overcome some kind of Writer's Block type thing with it. I've also been playing KingdomHearts and have taken a great liking to the character Xion, who I feel is under-loved. One day, after doodling my comic's main character when I should've been listening in class, I started drawing Xion in a more casual outfit, since we never see her in anything but her Organization XIII uniform. I liked the design a lot... and to make a long story short, there is now an arc in-story where the main character journeys into the Realm of RetGone, and Xion winds up following her home.

My local acting troupe was rehearsing for a comedy skit, when one of the performers decided to do all his lines as a KayneWest impersonation. We all loved it so much that we kept it in, and he ended up stealing the entire show.

Tropers/{{Aerodactylus}}: I was part of one of these my freshman year in high school, when we put on ''Once Upon A Mattress''. I played one of the castle guards, basically a human set decoration except for the part when myself and the other guard walked to the front of the stage to announce Sir Harry's entrance. One day I decided to do it a little differently and announced Sir Harry in the style of the Tonight Show (Announcing the arrival of Siiiiiiiiiiiiiiiiir HARRY!). Unfortunately for myself and the other guard, the extra time it took to do this made it impossible to get back to our spots before the rest of the cast flooded the stage to greet Sir Harry, and we both got trampled. We were unhurt, and the director loved it so much that he asked us to do it that way from then on.

When I was 12 years old, I was one the JungleCruise in DisneyWorld, which is already known for its {{Incredibly Lame Pun}}s. Being my favorite ride in the park, I knew every set by hand. When we came to the skipper's encampment (for those of you who don't know it's in the process being ransacked by gorillas) the skipper began to tell her joke by yelling out "Uh-oh, Uh-oh" to which I yelled, at the top of my lungs for the entire boat to hear, "Did your in-laws come over unannounced again?!" The skipper could not finish the joke and was laughing so hard she missed several cues for other typical skipper jokes. Eight years later, I would be on the ride again, and found that the "in-laws" joke had been added to their unofficial book of jokes to use when another skipper used the exact line word for word.

Please tell me you have transcribed this paragraph into one of the CMOA pages.

Somehow, I have ended up in three different community theater productions of ''AMidsummerNightsDream'' in as many years. The first time I did it, the actor playing Pyramus would end with a long, drawn out, "Dieeee!" Then, one production, the actor playing Thisbe (who was about ten years old) decided to add his own "Dieeeee!" I was playing Theseus and started my next line, only for Pyramus to add his own "Dieee!" Each performance, I'd never know how many "Dieee!"s there were going to be.... Once, after they ping-ponged it several times, I added a "Done?" before starting the scripted line.

Another production, in which I was playing Quince, Lion and Moonshine would enter together, Lion twirling around and Moonshine hanging onto the tail with one hand and the lantern with the other. My stage business involved running out of the way (usually ending up backstage), as the twirling pair got close to me. Good thing I did. One night I heard a *Smash!* behind me -- the lantern had flown out of the wire frame it was in and struck the wall right where I'd been standing. Poor Moonshine ended up holding just the wires of the lantern frame. It got so many laughs that we spent part of the next day trying to figure out how to get that to happen again, but couldn't.

I was in a musical of no further fame, where I played the caretaker of a castle, the character also doubled as the narrator. Wearing black with a black cloak when I entered the stage the live orchestra played a piece of music that wasn't really scripted: the Imperial March for a few beats. It was VERY hard to keep a straight face at that...

My daughter was in a high school production of ''{{Pippin}}'' where, at one point, she was supposed to run in and kneel before Charlemagne. On opening night, she kneeled too soon and ended up sliding across the last quarter of the stage. I didn't know whether it was intentional or not, until I asked her. It wasn't -- but it was kept in for the rest of the shows.

My (very manly) mother played Captain Hook in a local production of Peter Pan. During one of the practices of the scene where Hook is describing the crocodile, my mother added, "Aye, but he'll make a fine pair of shoes," to the end. The line was so hilarious that the director decided to keep it in all of the practices and performances from then on..

I once did a recording of Still Alive with my best friend for kicks and giggles. I was ill at the time, and after I'd finished the song, I sniffled. I had intended to cut it out before I sent the file to her friend, but I forgot, and my friend decided to keep it in, adding a NoblewomansLaugh after it. The effect was strange, but suitable to the song.

I was playing a costumer in a musical my friends and I wrote for our homeschool co-op (The plot was basically a group of people had to save their theatre from an evil producer who wanted to turn it into a Spork factory by putting on a production of StarTrek: TheMusical... Yeah.) and I decided to Ham it up considerably (I mean I had a British accent and acted quite a bit like Edna Mode. I also wore a ridiculous costume (We were in charge of our own costumes) which consisted of a dress, a hat which covered all my hair (Admittedly my hair is short, but the hat was poofy) fuzzy slippers, a pink purse, and oversized sunglasses shaped like clovers. During one of the rehearsals while I was whipping around to face another character, my sunglasses flew off my face. In subsequent run-throughs I managed to make it not only happen every time, but to hit my friend playing the director (who I was mad at in the play) in the chest. It got some nice laughs.

I needed a placeholder name for a character, and chose 'NAME.' However, in my haste, I typed 'ANEM' and chose to just use that name. It's worked well.

My mother runs a professional theatre troupe for people with disabilities. In one scene she wrote, a pair of "Frenemies" (Amy and Jennifer) bicker over a guy that one of the girls has a crush on (Dan). Jennifer becomes extremely jealous and bitter, therefore, when she learns Amy has been talking with him Dan a lot recently. Before storming off after a fierce argument, Amy tells her "Oh, and Dan? He's ''gay'', by the way", to which Jennifer responds "Oh yeah? I can fix him!" This was an improvisation that my mom kept into the script.

When I was nine years old, I played the Pharaoh in a rather boring Church play about Moses leading the Israelites out of Egypt. The Red Sea was represented by a bunch of younger children holding blue balloons. When the waters destroyed the Pharaoh's army, the kids were supposed to just surround us while we acted like we were drowning. One kid started hitting me repeatedly with her balloon, and the rest of the group followed suit. The adults running the show were less than pleased, but the kids did it anyway at the final performance and it got a big laugh out of the audience (the only one of the whole play, I should add).

It was a school production of GUYS AND DOLLS, the scene in the Save-A-Soul mission. I was fourteen. The director included the entire chorus in the team of people who've pledged to attend the mission, rather than just the (scripted) main group of gangsters. He instructed us all to just make random adlib crowd patter as we walked in. But I wanted to come up with something funny as my crowd patter, "In case the people in the front row actually hear me." I got an idea when I saw the set -- the mission was plastered with Christian iconography, with a seven-foot-tall cross and a painting of Christ walking on the water. So I thought, say, it'd be a hoot if I walked in, looked at it all, and said, "This is ridiculous - what am I doing here? I'm Jewish!" ...However, my voice carried to the point that it wasn't just the people in the front row heard me, but so did the entire rest of the audience. Fortunately, the line got a big laugh, so when I sought out our director to apologize, he just grinned and said, "eh, it works. Keep it in."

I'm currently in a production of ''MuchAdoAboutNothing'' in high school as my final high school play, and this is basically how the production is going. In order to put on the entire play (cut down to 2 hours) with 56 hours of rehearsal over 16 days, almost all blocking and gags were improvised by the cast on stage, with the director telling us if it doesn't work, or shouted as a joke during after-rehearsal note sessions. This led to a number of excellent moments, such as myself (as Leonato) being held back by two people as I go to attack Hero in a screaming rampage when I (falsely) discover her infidelity, scaring the poor girl out of her wits, or Dogberry (a female janitor) being pushed on a janitor's cart for all of her scenes and rarely getting off, while wielding a plunger as a staff, getting it stuck to Verges' face and lifting up a disabled watchman with it. When she took my entire wallet instead of the dollar I was giving her on the "There's for thy pains" line during a rehearsal, I could barely contain my laughter, and it was kept in.

Tropers/{{Ryumaru}}: My local production of ''ThePiratesOfPenzance'' had a Pirate King who had difficulty one day pronouncing "conscientiousness" during Act 2's "Paradox" scene. Ruth had to pronounce it for him, and it was funny enough that we kept it. Another incident with the same actor was during the same scene, when he accidentally raised the inflection of "He did" in response to Frederick bringing to mind the Major General's "orphan" lie, so it came out a question. Ruth, again, had the comedic sense and timing to throw in "Yes. You were there." We kept it.

In high school, my class had to create from scratch a few short sketches about the Renaissance period. My group got the topic of art (and religion). No one was really serious about it, prompting a lot of this.

There was lazy discussing of a general scenario and parts. I was immediately designated by everyone else to play "the nude female model who'll attempt to seduce the priest", by virtue of her GagBoobs. My immediate reaction ("I'm not a slut!! I'm a model, I do it ForTheArt!") was one of the first lines written down for the script. In the same conversation, someone's use of the French word "gourgandine" (a synonym of slut) also made it into dialogue.

The actual script writing was dumped onto me and one other actress to do over the weekend. We ended up writing it spontaneously by role-playing each of the five characters in a chat session, but had trouble finding an ending. I was temporarily assuming the part of the priest, being coaxed into modeling for the (male) artist played by the other girl... who randomly started waxing poetics about his Adonis-ian body. My cracked-up reaction: "Dude, are you coming on to a priest ? ... Oh. Hey." The script wrote itself smoothly after that, was finished in a matter of minutes, and back at school the next day, the guy playing the priest for the actual play was bewildered to find himself the target of a ''lot'' of Bad Touch from the artist. (And he ended up modeling in the nude, too.)

Finally, a subversion occurred with a line from the artist's assistant addressed to the priest, starting with "Father !". The actress's dissonantly enthusiastic tone prompted the priest to answer "My long-lost son !" during a rehearsal. It was ''almost'' kept in the actual performance, except it made the scenario unnecessarily complicated and cracked everyone up so bad it was impossible to keep the show going.

I wrote and directed a parody of ''{{Macbeth}}'' for a school project in Grade 10. It was performed by the very small high school drama club, with virtually no set or costumes, all of which made opportunities for hilarity to ensue. Broken props were a recurring theme, so much so that shrugging and muttering about 'Made in Scotland' became a staple reaction as swords, thrones, goblets and crowns were destroyed.

I was once in an amateur film where I played the Big Bad's dragon, who one of the heroes convinces to switch sides through the promise of money. After the Big Bad is defeated, there's a scene where my character confronts one of the heroes to ask for his money. A few facts should be noted: A) the hero in question was several inches taller than me, and B) the scene was shot outdoors on large rock, the shape of which caused the hero to be elevated several more inches higher. I noticed this, and immediately realized that the rest of the scene -- which featured my character assaulting the hero, among other things -- wouldn't work with such an extreme height difference. The resulting dialogue? #QUOTE# '''Me:''' Look, I want my -- Geeze you're tall. Look, could you stand over here for a second?\\ ''*I grab the hero by the shoulders and forcibly switch where we are standing. The result is, happily, that we both end up almost exactly level with each other* ''\\ '''Me:''' Thanks. Now -- I ''want'' my ''money''.

A musical example occurred in a classmate's final project for an audio recording and production course: The project was to bring a band into the school studio and record and produce a song. He'd gotten all the instruments recorded (and some backing vocals in the chorus if I remember things right), and the lead vocalist was supposed to record his part later, but couldn't make it in. Time was running short, and it was a requirement that the finished product had a vocal track. He still had the lyrics, written out on the back of paperwork he'd filled out to sign into the studio, but no one else was there and he wasn't much of a singer, so he ended up reciting the lyrics. While all that may not strictly qualify as throw it in, the fact that at one point he started reciting content from the paperwork ''itself'' because the lyrics didn't include the song's bridge probably does.

A few friends and I did a play about the story of Pandora's box. When Pandora opens the box, an actor hiding inside threw out different-colored balloons with words written on them to represent the escaping bad stuff and sins... except, due to a mix-up, there were two balloons that said "evil". So, when the second "Evil" was thrown out during, "Pandora", whose lines for this scene where "Oh no, it's X!" for every balloon, shouted "Oh no! It's MORE evil!". We found it so hilarious we kept it.

I have had a couple of these experiences, both involving flying props:

I played Lloyd in a production of NoisesOff, and had to give Selsdon his bag as he made his entrance in the second act. One night, I slipped on a stole that had fallen where it shouldn't have, and couldn't make it to the window in time. In desperation, I chucked the bag across the stage, where it sailed perfectly through the window and clobbered Selsdon squarely in the head. This move got a cheer from the audience (and a plaintive "ouch" from our Selsdon), and made it into subsequent performances. (We took the loot out of the bag after that, though.)

In a production of TheCompleteWorksOfWilliamShakespeareAbridged, our "Adam" (Brad, actually) was supposed to bring out the swords for the duel between Hamlet and Laertes during the three-minute ''Hamlet.'' During our last dress rehearsal, Brad got tangled up backstage and, again, couldn't make it out in time. He tossed the (plastic, thankfully) swords over the set (a simple line of flats), where the other two of us caught them, ran each other through, and collapsed with laughter. Needless to say, we kept that bit.

I have a bunch, though I wasn't the one doing the ad libbing:

Our high school did Miss Saigon, and during The American Dream, the Engineer was supposed to throw his hat off stage, but he decided it'd be funnier to throw it into the pit, hitting the gong. The director liked it, much to the chagrin of the percussionist (i.e., me).

The year after that, we did a production of The Secret Garden. Mary wasn't particularly good at memorizing her lines, and so on opening night, she flubbed a line in Show Me the Key. Dickin is supposed to be translating what she says into Yorkshire so a bird can understand. Instead of saying "I am a girl", the exchange went like this: Mary: "I am a lass". Dickin: "She is a...lass". We thought it was funny, so we kept it in for the other shows.

Our Wind Ensemble played a ridiculously awesome song called Godzilla Eats Las Vegas, complete with flautists screaming, teachers tangoing, and french horns roaring as Godzilla. During rehearsal, one of the sax players stood up and said "It was beauty that killed the beast" after Godzilla is vanquished. Our teacher thought it was hilarious and so we kept it in.

In the 2nd to last scene of one of the plays I was in I (a long lost lover of the main character) show up and cut in while she was dancing with another guy, she then does a final monologue (which was long and really hammy, which was in character for her) before we exit. During the second show I sat down on the couch, which was at center stage, and pulled out a book, which I pretended to read while she did her monologue. The director thought it was funny and had me do it for the last few shows.

My sister is in the midst of preparing to perform a production of "Faith County." During one of the practices, when the Bride ran into the Port-A-Poty and slammed the door, she banged her arm against the door. After shrieking out an "Ow!" she paused, looked over at the closed door, and yelled "I'm okay!" The Theatre Director thought it was funny enough that he told the girl to do the same thing during the actual performance.

Tropers/JohnnyBGoode: I have only done a minor example of this trope. In the school production of ''{{Curtains}}'', I was playing Detective O'Farrell and in one scene, Lt. Cioffi explains to me that he has some attraction to the female lead. I immediately ad-libbed a slightly creepy sounding "Aaahhhh" of understanding. It made all the other actors crack up and after that, it was pretty much in the script.

During the last chorus class of our middle school careers, my classmates started getting especially silly. One of our songs was "Shining Star" by Earth, Wind & Fire. We looked over the lyrics for the first time, and after the line "Born a man-child of the sun," one boy repeated "Man-child?!" in a hilarious, over-the-top voice. It became a running gag in rehearsal. When we performed it in front of our parents, however, and that line approached, I could see our teacher giving him a warning look. The time came, he kept his mouth shut, and after an extra second of silence, our teacher looked relieved. Then: [[AC:Man-child!]] The parents got a kick out of it, though, and our teacher was shaking her head with a smile on her face.

I was once in a school play focused around everything possible going wrong in a school play. In one scene, one of the actors was supposed to walk out of a door quickly; however, said actor tripped over his own feet, and instead of walking out of the door, he plowed right into it, ''ripping apart half of the scenery when this happened.'' This was so incredibly brilliant that, naturally, it was kept for future performances.

I had one in an online RP, where I was giving a (deliberately over-the-top) WorldOfCardboardSpeech to an enemy. At one point, a player in the OOC kibitzed with "I am as constant as the morning star!", apparently a reference to an anime I'm not familiar with. I promptly tossed it into my speech.

I once was making ''DuckHunt'' in C#, using the NES's resources to try to replicate the game. I had a glitch in the animation where at the beginning of a round, the dog was supposed to jump into the grass. Instead, he took off like a rocket. Funny thing was, the timer was still going for the duck to fly away, and eventually the screen would read "FLY AWAY". After a reboot of programming it, I deliberately programmed the animation "glitch" for my amusement.

Mine was totally unintentional. the first play I was ever in was ''A Barrel Full of Pennies'', in which, due to having more female than male actors, I (a girl) played Uncle Nemo. That particular character stands perfectly still for most of the play, which made casting me in that role a really stupid maneuver because I have ADHD (Attention Deficit Hyperactivity Disorder). Well the first rehearsal or so I started rocking back and forth in place to amuse myself, but the next time, worried because it wasn't part of the script, I didn't rock nearly as much. thus I was totally surprised when, at the end of rehearsal, the director mentioned that I hadn't rocked as much and to do it more.

My theatre class had us doing a duet scene as the final exam. My partner and I were rehearsing. At one point, I was supposed to turn around and run off to the side and there was a stool sitting right behind me which I promptly trips over completely by accident. Care to guess what got into the final production?

I once saw a middle school production of ''{{LittleOrphanAnnie}}'' where a painting that looked like the Mona Lisa was hanging in Daddy Warbucks' mansion. Daddy Warbucks claims that it is ugly, leading to a back-and-forth with the housekeeper where they finally decide to put it in the bathroom. My cousin, who was in the play, later mentioned that the whole scene was improvised when one character missed her cue, and Warbucks was trying to stall until she entered. In fact, none of the cast even knew that the scene made it into the play.

I was in a production of ''Oliver!'' in the eighth grade. The girl playing Nancy and the boy playing Bill Sykes were horsing around during rehearsal and she fell off a chair, spraining her arm and it had to be put in a sling. Rather than have the part be recast, our drama teacher thought because the character was being abused by her boyfriend Bill, the sling would work in the story.

While making his first Machinima ever in the original Counter-Strike, one of my characters threw a smoke grenade to get away from the antagonists. The grenade was hurled right into the camera from the blast. It just looked cool, so it was kept.

While performing as Grandpa in ''YouCantTakeItWithYou,'' I had a great ThrowItIn moment during rehearsals. While arguing with the tax man, I lifted a hand to wag a finger at him, but my finger had cramped up in a curled position. I paused, straightened my finger out with my other hand, and carried on with the rest of the line. The director loved it and I incorporated it into the scene for the rest of the run.

My College Drama Troop (which, sadly, no longer exists) put on ''Rhinoceros'' as its last play. A lot of this occurred, with the actors having creative character creation as far as their personae went. This led to a Fruity Gay Logician, amongst others, who was very colorfully dressed indeed, and nearly made me crack up whenever he spoke. High rising in pitch voice while giving the speech about Cats? Not to mention hitting on one of the old guys, even if so subtly? Yeah...

I played Launcelot in ''TheMerchantOfVenice'', who, in one scene, runs in imitating a hunting horn and looking for "Master Lorenzo" and his wife, who are about five feet away from him. (It's the middle of the night and Launcelot can't see them.) The dialogue goes something like this: #QUOTE# '''Launcelot:''' ''(yelling at Lorenzo)'' Sola! Did you see Master Lorenzo? Master Lorenzo, sola! Sola!\\ '''Lorenzo:''' Leave halloaing, man; here.\\ '''Launcelot:''' Sola! Where? Where?\\ '''Lorenzo:''' Here.\\ ''Launcelot delivers his message''

However, during one of the rehearsals, I forgot what the message was, resulting in an awkward, sheepish laugh. The director thought I was acting (like "gee, that's embarrassing, I didn't know you were right there...") and loved it. I kept it in.

When I was directing a children's production of ''AMidsummerNightsDream'', the boy who played Francis Flute was a little unsure of his lines, and read the line about the limestone wall as "Thy stones with ''lemon'' and hair knit up in thee." I kept it in, with Quince hissing ''"Lime!"'' at Flute and Flute quickly correcting himself, "Lime."

My sister played Marcie in ''You're a Good Man Charlie Brown,'' and in one scene a couple of characters had to walk by doing various things (playing with jump ropes, reading, etc) to add to the comedic effect of Linus chasing Lucy on and offstage screaming, "Give me back my blanket!" She and Peppermint Patty were supposed to walk by with baseball gear pantomiming conversation. However, on opening night they ad-libbed an actual dialogue. It was kept in. #QUOTE# '''Peppermint Patty:''' *something about their baseball team*\\ '''Marcie:''' I don't play baseball, sir.\\ '''Peppermint Patty:''' Stop calling me "sir"!

I played Maxwell in my school's production of GetSmart. During an early scene in the play, I was supposed to be distractedly analyzing the bookcases and furniture in the chief's office while he explained the mission to me. On opening night, however, right after the line where I said, "I can handle both cases, Chief!", I accidentally knocked over everything on the top shelf (including an American flag!) and then desperately tried to pick it back up. The audience loved it and the director told me to do that again for the rest of the run.

This troper was doing a puppet scene for Sunday School, and was coughing due to allergies. The script for that Sunday didn't call for the character to stay long, so he simply threw in that the character was not well that day.

This troper had three throw it in moments in three subsequent shows at his senior year of High School:

The first came in near the end of a Romeo and Juliet parody called Romeo and Julie. The character I was playing had a line where he was telling Romeo of Julie's untimely demise. Naturally, this being a completely over the top parody, complete with ABBA songs and the like, I had to do a little cheer for the lines. After we managed to stop everyone from laughing, the director said to throw it in.

The second was not specifically this troper's throw-in, but rather one by the whole cast. During our spring musical, which was Footloose, during the final number, we threw in the macarena. It's uncertain where the inspiration came from, but it did, and led directly to...

The third throw-in was during a melodrama called Chaos at the Cannery. This troper had intentionally chosen a bit part which would be, in the end, a big part of the action. In fact, he and the main villain faced off for a shoot-out. About three days before the show, I decided that I would do the macarena again, when trying to figure out if I had been shot. A good end for the year.

When performing as Oberon in a drama group production of ''AMidsummerNightsDream'', the actress playing Puck alongside me had trouble remembering her lines, and often had to be prompted. Eventually I got fed up with this, and when I was supposed to say "Thou hast mistaken the man completely!", I actually said "Thou hast forgotten thy lines completely!" As she went off to read her script again, I turned to the audience and remarked "You just can't get good help these days", which got a laugh.

Another one came in a school production of ''{{Grease}}''. I was playing hopeless nerd Eugene, so during the "Summer Nights" scene, at the line "Could she get me a friend?" I improvised leaning towards Danny hopefully, as if saying "Me too!", during rehearsals. The director approved, and it went in the final performance.

Another of my ThrowItIn moments happened entirely by accident. My class (including me) were performing the song "I Wan'na Be Like You (The Monkey Song)" from ''TheJungleBook''. Unfortunately, I happened to be suffering from diarrhoea that day, and missed most of the performance. I rushed on stage just before the end, and stood there looking confused (not sure where I was supposed to stand) until someone called me to stand next to her, and I joined the group and sang the end of the song. One of the judges apparently thought that was supposed to happen, declaring that he liked "Mowgli running on stage at the end".

In a nativity play when I was supposed to sing a VillainSong as King Herod (titled "Herod's Tantrum", as I recall), I was told to be as angry as possible. So, when beginning the song, I leapt up from my chair, and ''kicked it across the stage'' as I yelled the first words of the song. The audience (who were sitting very close) narrowly avoided being hit by it, and most of them were (understandly) very startled. I didn't miss a beat though and continued with my song, also turning a table over in the middle of it. Neither of those two things were scripted or even done in rehearsals, they were both added by me on the night.

In a third grade Christmas play, this tropette was a generic elf. She was only supposed to have one line: "Do they [Santa and Mrs. Claus] know something we don't know?" But, during rehearsals, someone decided that there needed to be a reaction to the fixed Christmas tree. And thus, "Wow, look! Holy reindeer!" was born.

Also, several of my friends, during a school-day production of Much Ado About Nothing, began freaking out when the bell rang during the show. A few characters would stop what they were saying and be like "Did you hear that?" And ever other character onstage would either offer a helpful "I heard it!" or a "You're delusional, I hear nothing."

The best example I can think of that happened around me was a few years ago at my theatre camp. There was a part where a Star Trek fan was supposed to bring out a chair for William Shatner (William Shatner as a character and I am not kidding) to put his foot on and do the Captain Morgan pose. During the rehearsals we always had to scramble for a chair. One day we couldn't find one and the Star Trek fan in question held up Williams Shatner's foot. So, we threw it in.