Bum electricity

From Ultipedia

In bum electricity both teams mix up and stand in lines opposite each other with one person stood at the end of both lines holding the hands of the end person from the lines. Everyone in the line then closes their eyes and puts their hand on the person next to them's bum. The person at the end of the lines then squeezes the hand of the person at the end of each line. they then squeeze the next persons bum and they pass it on etc until it reaches the other end where the person has to run and grab a bottle of disc or something. The person that wins moves to the other end of the line where the hand squeezer guys is and the looser stays where they are to try again. The winning line is the one that goes through their whole line so everyone in it has won a game.