I was in fourth grade when this impact occurred. I can't even remember what the argument was about, but I was having a rather animated disagreement with a fifth-grade girl. I was standing up for myself pretty well, too. I did not even see the kick coming. I can't remember the pain, but I know it was incredibly intense. I sank to the ground, whimpering and groaning for probably ten to fifteen minutes. I'd never even thought someone would do that.
I'm happy to say that experience wasn't repeated. The closest I came was in eighth grade Drama class. I was acting in a Shakespeare scene that required I be stabbed. It seemed my dueling ability was a little too good, for my opponent finally had to stoop to sticking me with her yard-stick in my cajonies. Needless to say, I went down.