This was developed by some group of genii in partial homage to the film "Fight Club"; the procedure went thus.

1. 10 to 20 to all the blokes in the year (excepting all the poofy ones who had girls for mates) would stand in a large circle (clothed, naturally.)
2. The members of the circle would throw whatever small change or trinkets they could muster into the centre of the ring. The amount of money (or cool stuff) would slowly pile up.
3. After some time, an enterprising and daring member of the circle would decide the amount in the pile was enough to offset the risk; he would get on the floor and try and grab it all.
4. And everyone would jump on him.
For the next thirty seconds the situation would degenerate into a writhing, screaming free-for-all, a mosh pit without the music or the kindness. If you were quick, you might make a profit of 10 to 20p every game, and only get your hand crushed a couple of times.