The exact origin of the Eongeureur clip is not documented, and its Korean title is written in loose, playful jamo rather than a standard word, which is part of why searches use the romanised spelling eongeureur. It circulated as a short challenge sound on TikTok, where creators reuse the same audio under new videos instead of recording their own version. That reuse turned a simple growling noise into a shared joke format, similar to other drawn-out vocal clips like AUUGHHH, and it is still used when a video needs mock menace delivered as pure comedy.