For some bizarre reason, some of my friends at high school thought it would be funny to turn it into a game they called 'Sack Shot'. Basically, two guys sit at opposite ends of the room on the floor with their legs apart. They then take it in turns to throw a ball of any sort, usually it was a tennis ball though smetimes if that wasn't available they used a squash ball (seriously, those things are even worse!), at the crotch of the other person. The aim was to cause your opponent as much pain as possible so they'd give up. If you give up, or if you move either hand from your side to block the shot, then you automatically lose. Your best hope was that your opponent had crap aim.
Seriously, they played this most lunchtimes in the Sixth Form common room. It got to the point where, although I was fortunate enough to never be pushed into playing it, I considered wearing my old cricket box to school each day for a short while (which I hadn't used since Year Seven). Fortunately, it died out fairly quickly...
Oh, and another time I was watching some friends play a game of squash on the school courts and one of them was hit in the crotch by a squash ball at high speed. He was literally rolling around on the floor in agony for at least ten minutes. Frankly, we all thought it was hilarious...
