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When playing madden and others are waiting. if one player scores 21 points before the other can even score 1, they must forfiet the game. 21 rule is used when players are too cheap to buy a multi tap.
red: i got next, yall playing 21 rule right?

john: 21 nothing biatch, pass the sticks loser
peanut: damn i gotta stop picking the lions, they suck.
by Jpleseme October 07, 2006