It's possible that:
* It's a slang term or regional expression. If you heard it in a specific context, please tell me more about where you heard it and what was being discussed.
* It's a misspelling. It could be a misspelling of another word, like "oof" or "uh-huh."
* It's a made-up word. Sometimes people create their own words for fun or to express a specific feeling.
To help me understand what you mean, please provide more context about where you encountered this word.