This sound is known by fans as Freddy Fazbear's laugh from the Five Nights at Freddy's series. Freddy is the mascot animatronic of the games, and his laugh became one of the most recognizable audio cues in FNAF clips and fan edits. As the series grew online through gameplay videos, reaction compilations and horror memes, the laugh spread beyond the games themselves. People still use it because it instantly communicates suspense, looming danger and that specific FNAF style of animatronic horror.