SUBREDDIT: r/Advice
TITLE: I'm in trouble at school, really need some advice
POST: Today,  in the totally unserious mood of a Friday afternoon at school,  I made a huge mistake. People at my school play this game called "Oreo". If you lose,  the winner picks a person for you to ask out. Well,  today,  I was asked out (the guy lost at Oreo). And for some reason,  I thought it would be hilarious to just flip the guy off. Of course everyone at his table,  including him,  burst in to laughter. He flipped me off right back. No hard feelings,  right?  Wrong. 

First I should mention that this kid is no angel. He constantly swears,  and makes a ton of innapropriate jokes.  I usually don't get in trouble,  so you can see why I need advice. 

Anyway, at the end of the day, he went over and TOLD on me,  even though he had given me the finger right back. I have no idea of what to do on Monday,  can you guys please help?
TL;DR: 
I flipped off a kid at school, it was all laughter,  he did it back,  then proceeded to turn me in. I don't usually get in trouble, advice is desperately needed.