Rather than coming from a single film or show, this sound is tied to the wider reaction-meme culture built around confused-looking cats, especially the cross-eyed kitten image shared in edits, comments and short videos. Creators reuse it because the visual joke is instantly readable even without context, and the short clip fits the fast pace of reaction content. Its staying power comes from that simplicity, a five-second burst of bafflement that works for pets, people and everyday mix-ups alike.