The sound comes from Five Nights at Freddy's, the 2014 horror game created by Scott Cawthon, and its main animatronic Freddy Fazbear. Freddy is known for his deep laugh and the music-box jingle that plays before he attacks, which fans began imitating as a simple har har har har har chant. Clips of that imitation spread through TikTok, YouTube Shorts and gaming edits in the early 2020s, turning a horror cue into a comedy staple. It remains popular because almost any viewer recognises the rhythm instantly, even outside the fandom.