Ninja is a game in which two or more people must play. The game is played by slapping each other on the hand. You can only make one move per turn. Once an attempt at slapping the other person's hand is made, you must keep your body in that position until your next turn.
Person 1: Dude, my hand hurts from that Legit game of Ninja!
Person 2: Hella yeah it does, I pwned you in Ninja!