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
Spock vaporizes rock
and, as it always has,
rock crushes scissors

Thanks, Amy. Without you I never would have caught this great monologue on Big Bang Theory.