Listed on soundboards as the iOS old car horn, this short honk circulates as a stock comic effect rather than a clip tied to a single film or show. Its two-tone squeeze is borrowed from the language of early motor cars and cartoon vehicles, which is why editors reach for it when something feels deliberately old-fashioned. Shared in meme edits, short videos and group chats, it works as a quick audio punchline for entrances, interruptions and reveals, and remains popular because viewers recognise its meaning instantly without context.