Pusi spread as a short-form video sound on TikTok, where brief, recognisable clips are reused across thousands of edits with different visuals. Its exact origin is not clearly documented, so its popularity comes from how creators use it rather than from a known film, show or song. The name is short and easy to search, helping the clip resurface in meme edits, reaction videos and playful montages. It remains in use because the tone is flexible, fitting cute, awkward and lightly comedic moments without needing context from the original post.