* It's a misspelling or a made-up phrase. It might be a playful word invented by someone.
* It's a regional slang term. If you heard it in a specific location or community, it could have a meaning specific to that group.
To understand the meaning, you need more context:
* Where did you hear it?
* Who said it?
* What was the situation?
Please provide more information so I can help you understand what "budala cocosh" might mean.