This sound works as a meme because it combines two instantly recognisable noises into one absurd punchline, and short-form creators have kept it circulating as a reaction clip rather than tying it to a single film, show or viral video. It is most often shared as a downloadable soundboard clip and dropped into edits, streams and group chats where a normal trumpet fanfare would feel too serious and a normal horse sound would feel too ordinary. That simple contrast keeps it useful for surprise entrances, failed attempts and over-the-top reactions.