Lot of the older kids at my elementary school used to give me a hard time, as well as my classmates, but not too many physical fights except the time I beat an 8th grader when I was only a 4th grader. She was picking on me and I got sick of her nonsense, grabbed her by the hair and just yanked while pulling her towards me. Next thing I know she's in the air then drops hard into the snow and pavement lol.
She got in a lot more trouble than me, I just got off with a warning about self defense XD!! Awful I know how amusing I still find it but it did look pretty bad on her that she's twice my size at the time and she got beat.