Eugh has no single documented source, which is part of why it spread so easily online. As a short, instantly understood sound of disgust, it was clipped, shared and reused across short-form videos, reaction edits and meme compilations, where one groan could replace a whole caption. Creators use it because listeners recognise the feeling immediately, whether the joke is about bad food, awkward behaviour or something unpleasant on screen. Its simplicity keeps it reusable, and it still appears whenever a quick, relatable reaction is needed.