Full contact pinball is a variation on multiplayer or doubles pinball invented by my friends Chris and Marty. They're both insane, but I love them for it.
Anyway, one day the two of them were among a group playing doubles pinball by the Go Team! rules (one person per flipper: please go read my description if you don't know what I'm talking about) and feeling particularly rowdy. Rather than waiting their turn to handle a flipper, they took to wrestling for the opportunity, and otherwise resorting to physical force to prevent others from taking a turn at the machine. The resulting entertainment combined aspects of pinball, Twister, Spoons, and rugby. It was truly a spectacle to behold. Great fun.