A new tactic the the FPS Xbox 360 game, Halo 3. A Player lures another player into following them. Player 2 is following player 1. Player 1 goes around a corner. Player 2 Follows. Player 1 jumps backwards, and Player 2 passes under Player 1. Player 1 Melee's Player 2 and instantly dies due to an assassination. Ergo, Ninja'd.