What does willy fuu mean?

"Willy Fuu" is not a common or recognized phrase in any known language. It's possible that:

* It's a misspelling or a made-up word. It's likely a typo or a humorous invention.

* It has a specific context or meaning within a particular community or group. Could you provide more information about where you encountered this phrase?

Please provide more context or details so I can help you figure out what "Willy Fuu" might mean.