Here's why:
* It's a word used in many languages: "Kuku" is similar to words in other languages for "chicken," "cock," or "male chicken." However, those words in Hawaiian are "moa" (chicken) and "kāne moa" (rooster).
* It could be slang: It's possible "kuku" is a slang term or nickname used within a specific Hawaiian community or group.
* It could be a name: "Kuku" could also be a name, though it's not a common one.
If you heard "kuku" used in a Hawaiian context, please provide more information about the situation so I can give you a better understanding of its meaning.