a fuck nigga is a nigga who constantly keeps his girl upset. Doesn't give her anything in return. Lies to her, doesn't keep it real. Doesn't support when support is needed from him. Isn't the type you come and talk to, exposes, humiliates his woman. But claims he "loves" his woman. Does things over and over,
A boy who pretends to be a man and about something but after he gets what he wants he does the switch up .. Strong possibility he will switch up before receiving what he wants