This is a game to be played at home with your friends, 3 or more people.
Everyone starts by jizzing into a central cup, everyone writes there names down and puts them in a hat. you than leave the cup in the centre for a couple of hours.
Later that evening a name is drawn out of a hat, whoevers name it is has to drink the cup.
The name comes from when the person insists they didnt put there name in and they should just redraw.
I was at giles house the other night and we played The Triwizard Cup, thats the 5th time i have lost in a row!