Duuh circulates on soundboards as a very short reaction clip, filed under music and tagged with Eilish, although the board listing gives no fuller recording or performance details. That lack of context is part of its appeal online, where creators treat it as a standalone sarcastic interjection rather than a lyric or a line tied to a specific scene. Its half-second length makes it easy to drop into TikTok edits, meme compilations and reaction videos, where a single deadpan syllable can carry the joke without slowing the pace, which is why it keeps resurfacing in short-form edits.