Filthy Pig Bastards Share definition Flag A term used to describe misbehaved teenage boys who's mother has just got done going through menopause. You three filthy pig bastards better cut the shit, or I'll bash this frying pan across your head. Filthy Pig Bastards by Imacdaddy April 24, 2006 0 0 Get merch Get the Filthy Pig Bastards mug. Buy Now — $32.95 See more merch