Little is publicly documented about the exact origin of UFO Nobu 02, and the clip is best known through its circulation on soundboards and in short-form edits rather than through a widely cited source work. That lack of a clear backstory has not stopped its use: creators reuse the short clip precisely because it is instantly recognisable as a standalone sound, easy to drop into a timeline, and short enough to work as a reaction or transition. Its continued popularity comes from that practical, repeatable use in memes and videos, not from a single viral moment.