The line comes from Dawn of War, the real-time strategy series based on Warhammer 40,000, where Imperial Guard infantry units announce contacts with enemy monstrous creatures. Clips of Guardsmen callouts later spread through gaming forums and video edits alongside similar callouts like Enemy Spotted, because the delivery captures tabletop-style dread in a few seconds. It remains popular with Warhammer fans for boss fights and mod showcases, where a human soldier facing a daemon or Tyranid still feels hilariously out of his depth.