This sound is the jumpscare from Five Nights at Jelly's, a fan-made horror game built around the same night-watch survival idea as Five Nights at Freddy's. On soundboards and in short videos it is usually detached from the game itself and used as a standalone scare, which is why it keeps appearing in horror edits, memes and prank clips long after players first heard it in-game. Its short length and instant loud peak make it easy to drop into almost any quiet moment.