fatherfucker noun4 •(vulgar) One who engages in incestuous sex with their father. •(vulgar) A generic term of abuse, similar to motherfucker.That fatherfucker is always on some shit •(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. •(vulgar, offensive) A gay man. formsfatherfuckers