* A specific context: Perhaps it's a slang term, a name, or a word from a fictional world.
* A misspelling: It could be a misspelling of another word.
* A different language: It might be a word in a language you're unfamiliar with.
To help me understand what you mean by "patapan," please provide more context:
* Where did you hear or see this word?
* What was the situation surrounding its use?
* Can you give me an example sentence?
With more information, I can try to help you figure out what "patapan" means.