dumb bastard 

Someone who is dumb and likewise a bastard.

Ira is a dumb bastard.

dumb bastard by DJ Deezy January 9, 2008

dumb shit bastard 

A person who is so fucking dumb their family disowned them. Therefore they have become a bastard. Dumb shit bastards are annoying. Their faces beg for a flurry of punches from everyone within a two mile radius.

That weird kid looks like a dumb shit bastard.

dumb shit bastard by TartarSauce January 5, 2015