I recall the most horrific and embarrasing accident I ever had. Me and my friends were kicking around a hackysack (This was back in the late 80's when everyone was kicking those things around after school). I swung my foot up.. managed to kick the ball, but also managed to kick my jewels as well... HARD (Yep... Apparently I was THAT flexible... sometimes I even amaze myself).
Not only did I have to endure the pain of two grapefruit sized jewels for a couple weeks, but I also had to endure the pain of my friends "sympathy" which consisted of them always trying to hit me in the groin with a hackysack and such.
I would have beat them into a fine mist if I wasn't in as immobile as I was.
I DID get back at one of them. He had all his wisdom teeth pulled out and that same day, he decided to play basketball with me. I managed to give him a nice elbow squarely to the jaw that had him on the ground curled in a ball for about 15 minutes or so.
