Its origin is not documented, and no source work, character, or performer is named for it. Secret Horse reached listeners as a user-generated entry listed under viral and meme tags, rather than as a clip taken from a named film, show, or song. Without a documented original scene, its use online has centered on the title alone: creators reuse it as a reaction, a non sequitur, or a shared joke, and viewers recognize it from the name and the context of the edit. That reuse, rather than a known backstory, is what keeps the clip in circulation.