This didn't happen to me, but my friend's gf was like, really horny in school and said "I want to take you to the auditorium and ride you until the end of the day" I was right there the whole time. He agreed with her awkwardly and she went on her way, and he and I walked together awkwardly to class in silence. Then I couldn't hold it back, I looked at him and said "Look, dude don't get mad ok?" "Ok..." "I'm not saying she's a whore or anything, but her favorite shade of lipstick is penis."