Noun
(vulgar) A generic term of abuse, similar to motherfucker.
(neologism, literally, vulgar) One who engages in incestuous sex with their father.
(vulgar, offensive) A gay man.
(vulgar) A woman who engages in intercourse with men much older than herself, or who has an Electra complex.
She's a total fatherfucker; all of her boyfriends have been at least twice her age.