The sound comes from Call of Duty: Modern Warfare 2, released in 2009, where the tactical nuke was the ultimate 25-kill streak reward. Once activated, the warning played for the entire lobby before the nuke ended the match instantly with a victory for the calling team. Clips of the announcement spread through early YouTube montages and forums, and the phrase became shorthand for any overwhelming, game-ending event. It remains popular in memes and edits long after the original game because gamers immediately understand its finality.