Dead by Daylight is an asymmetrical multiplayer horror game released in 2016, in which one player controls a killer while four others try to escape. The Doctor is one of its killers, a former asylum physician whose unsettling voice lines and laughter help sell his madness during chases. Short clips of his laugh began circulating in gameplay videos and horror edits, where creators reused it as a shorthand for a villain losing control. It remains popular because the sound is instantly recognisable to players and needs no explanation to land as a joke.