also S.O.B. n. phr. , vulgar , avoidable (but becoming more and more acceptable, especially if said with a positive or loving intonation). Fellow, character, guy, individual. Negatively: Get out of here you filthy, miserable sunuvabitch! Positively: So you won ten million dollars at the lottery, you lucky son of a bitch (or sunuvabitch)!
Compare: SON OF A GUN.