The phrase was geht is everyday German slang for what is happening or what's up, and eyo adds a street-style hey to the front of it. As a standalone clip it spread through meme soundboards, short video edits and chat audio shares, where German phrases are often used even by non-German speakers for their punchy rhythm. Its appeal does not depend on understanding every word, because the tone alone signals a breezy entrance. That keeps it reusable as a greeting sting long after specific trends fade.