A student in this troper's English class claimed to have a girlfriend named 'Shaniqua,' which started with the teacher catching him getting a message during/after class, if I recall correctly. A long-running joke in the class was that nobody believed this girl exists. He claimed he didn't care what we thought either way. We never did find out whether or not she was real...

This troper got some superglue on the back of a book he borrowed from a friend. Nobody believes that it's really superglue though. The running joke is that the book was so awesome.... stuff happened. If you know what I mean.

Unless there's more to this story, this should really be under NotWhatItLooksLike.

Once this troper, who was attending an all boys school, had an extremely attractive girlfriend. Since he had the social status of pond scum his classmates never believed she existed (or that if she did she must have been too fugly to get anyone else). Even when they saw her he could not convince anyone that she wasn't his sister.

You two should have made out. If you can't make them believe you, squick them.

This troper got sent to therapy for her not-so-imaginary friend. Dylan was a ghost who liked to play pranks and move objects and thus nobody believed her. That was until he was very much clearly proven as there and therapy was immediately called off.

Er... was he actually a ghost, or just a living person who was particularly elusive?

Tropers/AlsoArin did this with an entire ''country'' once. When she was younger, her babysitter didn't believe Persia existed.

For the sake of nitpicking: It doesn't. The area is now called Iran.

This Troper is writing a story where one of the characters has one of these. Who looks exactly like her. Although it is kind of ambiguous whether the friend is a separate entity, a twin from another dimension, a manifestation of some part of her mind, or the same person. (It's a weird story.)