"Rock-Paper-Scissors-Lizard-Spock" is an expanded version of the classic game Rock-Paper-Scissors. It includes five choices: rock, paper, scissors, lizard, and Spock. Each choice can defeat two other choices while being defeated by two others, creating a more complex strategy than the original game. In this version, rock crushes scissors and crushes lizard, paper covers rock and disproves Spock, scissors cuts paper and decapitates lizard, lizard poisons Spock and eats paper, and Spock smashes scissors and vaporizes rock. This game was popularized by the TV show The Big Bang Theory and is often used to resolve disputes or make decisions.