This sound is associated with Five Nights at Freddy's 3, the 2015 horror game in Scott Cawthon's FNaF series. Fans know it from the in-game phone call moments that help build the game's eerie atmosphere. Online, the clip spread through FNaF compilations, gameplay videos, and short meme edits because it signals that something unsettling is about to happen. It is still used by creators who want a quick horror cue that instantly reads as FNaF, especially alongside a FNaF jumpscare scream or other retro-styled game audio.