The sound comes from Hololive Indonesia VTuber Kobo Kanaeru, a streamer known for loud, expressive reactions that fans clip and reuse across TikTok, YouTube and Discord. The short adopted line spread through soundboards because it is instantly understandable even without context, turning a personal joke into a reusable punchline for an awkward moment or unexpected reveal. As Hololive clips continued to circulate, it became a familiar shorthand for exaggerated shock, especially in VTuber edits, gaming videos and short-form comedy where a single second of disbelief can carry the joke.