The phrase is plain everyday Spanish meaning I do not know what he said, with men added as casual slang at the end. Short clips built around a single confused line like this spread easily on meme pages and in group chats because they need no context to understand. The brevity and flat tone make it reusable for almost any misunderstanding, from garbled audio to rambling voice notes. It stays popular as a quick shorthand for being lost, letting creators react without recording their own voice or adding on-screen text.