The sound comes from Left 4 Dead 2, Valve's 2009 co-op zombie game, where the Witch is a special infected known for crying before she is disturbed. That audio became memorable because players learn to freeze or change route as soon as they hear it. Outside the game, the cry spread through horror montages, streamer edits, and gaming memes as a fast way to signal danger, fear, or a bad decision that is about to trigger chaos.