Alright, here's the situation:
It was religion class. I've always had a vendetta with one of the kids, due to his tendency to pick on me, usually for no reason. While we were doing work today, I could hear him whispering some rotten things about me. I don't quite remember what they were, but they did make me feel bad. So, just before we moved to our next class, I enter this discussion with him that went something like this:
Me: Hey, *person*, did you do any work?
Him. No
Me: Well maybe if you spent less time insulting me, you could've gotten some work done.
Other kids: BURNED!
Luckily, he couldn't come up with a counter-burn. I usually don't favour revenge, but this was one of those time >:).