A phrase said in a similar manner and context to "Fuck My Life" except used when ones wife/girlfriend is the source of grief
Bill: Hey Mike I got some tickets to the Rangers game tonight, you in?
Mike: Oh hell yeah buddy, just let me run it by my old lady
Wife: Michael you promised me that you would watch the third Harry Potter movie with me tonight, you know how scared I get
Mike: ugh Fuck My Wife, sorry Bill I can't come
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,