This clip comes from Jollibee's, a fan-made horror game in the style of Five Nights at Freddy's, where players must watch cameras and vents while mascot characters move toward them. It is the first of four related vent sounds tied to Popo and Yum approaching, so it works as the earliest warning that one of them is on the move. Fans later shared the individual cues on soundboards for use in gameplay videos, streams and horror edits, where the short, recognisable vent noise still signals that something unseen is getting closer.