Little is documented about where sujou first came from, so its history is mainly an online one. The clip circulates under its short name on soundboards, where visitors play it, share it and save it as an MP3 for edits. Its appeal comes from that brevity and recognisability, which make it easy to reuse across memes, reaction videos and short form posts. Because it is not tied to one scene in most shares, creators treat it as a flexible reaction sound rather than a quote, and it keeps resurfacing whenever a quick audio punchline is needed.