This clip spread through TikTok edits where anime-style visuals and cute characters are paired with absurd animal sounds for comic effect. Short meme audios like this one travel quickly because they are easy to reuse, instantly recognisable in a feed, and flexible enough to fit reactions, transitions and joke edits. The Cinnamoroll association in its tags reflects how often it appears alongside soft, pastel character content, contrasting the silliness of the horse sound with something sweet. That contrast is a large part of why creators keep returning to it.