This might not be a real example because I heard this when I was a child. I was in grade one, and there was a female classmate. There were hints she knew more than a first-grader should know, but one time after school, we were in the sandbox. She asked a series of questions typical of marriage fantasies. I was just going along with it. Then she asked (paraphrasing, I'm reaching my memory 11 years): "Do you want to have sex?" The context was the future, but I said yes. Then went: "Wait, what's that?" Then a first-grade girl gave me detailed description of the act. This was also in front of several middle school students. This probably explains my SexIsEvil attitude as an adult. Sorry for the
filibuster.