I've never really had any revenge. The closest was a kind of "what goes around comes around" thing. This guy in highschool loved nothing more than to make my life miserable. In 10th grade he punched me square in the stomach after school for no reason, causing several people to stop and laugh at me. The funny thing was that he was a bigger nerd than I was/am. Bigger in the fact that he had less friends and was also taller and skinnier. On graduation day he tripped on his way up to get his diploma and fell right on his face. This caused all of the students and half the the parents/friends/audience people to laugh. That was good enough for me. :)