well this didnt happen to me, but I have to mention it anyways.
Back when I was in Jr. High (back in the 90s) there was this boy who bragged all the time about how much better he was than every one else. Anyways, we were all trying out for the baseball team and the coach was checking to see everyones skills, so he put a baseball pitching machine on max speed, and shot the balls straight up in the air for a fly ball. So we all lined up to show off our skills. So this kid, all talk, tells everyone to watch, he told the coach to make the ball go as high up as possible. The coach did, and so this kid puts a cocky grin on his face and gets ready to catch it.
Guess what? his baseball glove missed the ball completely and the ball smashed right into his nuts. I have to repeat this, he is standing in front of everyone, guys.. girls.. telling how great he is and this ball, shot by a machine max force straight up in the air comes down faster with gravity and smashes him in the balls. First he threw up, then started rolling back and forth. There was a long moment of silence as we all watched him twitch and barf while holding his balls.
10 minutes later I think we called the ambulance. Anyways, I bet that must have felt wonderful.