This clip comes from Post-Shift Custom Night and is tied to Tedbear, one of its Custom Night characters. Like many FNAF jumpscare scream sounds, it circulated through fan soundboards and short horror videos, where creators reused the loudest moment from the encounter on its own. Its appeal comes from instant recognition for FNAF fans and a ready-made shock that needs no setup, so editors keep returning to it for Custom Night compilations, reaction clips and scary memes.