Top Definition
A Dumb hammer is a flaccid penis that is attached to a stupid, wasted, drunken man. Who will flash his penis and expect everyone to think it is something that is worth looking at.
Brian was in his house and his windows were open and he was choking his chicken and someone outside looks in and can see him spanking his money and yells, Quit abusing your dumb hammer....

Or

Brian, sittin in his lawn chair naked and wasted, sloshing his beer down his gullet, stands up and yells, "Get a load of this and stands up and waves his penis at the crowd. Someone from the crowd laughs and points, laughs and yells, PUT THAT DUMB HAMMER AWAY.
by eve co October 04, 2009

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