Wasn't really much of a fight, but I was in the 4th grade. Sitting next to someone who kept pinching me all day. Told the rents about it, the rents talked to the teacher. Kid didn't stop, so the rents said the next time he does it, knock his ass off the chair. Went to school the next day, kid pinched me, so I knocked his ass onto the floor breaking the seat off the desk (it was one of those swivel chairs) in the process. I was sent to the office, the rents got called in and they told the principal the whole story. I did not get in trouble for it. The kid was moved to a different area of the class away from me. He never bothered me again.