Bro Shambo
When skateboarders play a game called "S.K.A.T.E" they use this term as another word for "rock, paper, scissors" to decide who will go first.
skater 1: "ok let's bro shambo!"
skater 2: "ok, rock, paper, scissors!"
skater 1: "damnit!!" "you win!!"
skater 2: "ok, rock, paper, scissors!"
skater 1: "damnit!!" "you win!!"