What's this game ?
Rock, Paper, Scissors, Lizard, Spock is a game of chance that expands. It is first used to settle a dispute about what to watch on TV between Sheldon and Raj in "The Lizard-Spock Expansion".
sources for information and rules: http://bigbangtheory.wikia.com/wiki/Rock_Paper_Scissors_Lizard_Spock
Scissors cuts Paper
Paper covers Rock
Rock crushes Lizard
Lizard poisons Spock
Spock smashes Scissors
Scissors decapitates Lizard
Lizard eats Paper
Paper disproves Spock...