In Spanish slang, 'muñeco' is often used to refer to a guy or man. It is a friendly term, similar to 'dude' or 'mate' in English. It can also be used to compliment someone for being attractive.
Examples
- Spanish: Oye, muñeco, ¿quieres ir al cine esta noche?
- English: Hey, dude, do you want to go to the cinema tonight?