-A man who cheats on his life partner WHILE they are intertwind in marriage. They are sneaky, emphasis on rat, and are cheating, emphasis on dirty. Term only applys to men because woman rule the world.
Tom: Wait what? Who told you? And what's a 'droah'?
Lisa: DIRTY RAT OF A HUSBAND! *Slaps face repetedly then proceeds to pee on husband's sandwhich which later he eats, then dies. She also bitch slapped Kathy. Then Kathy dies.*