The trappings, accoutrements, and doings of a dumb ass.
Come on guys, let's go home. This sort of dumb assery is going to get us all arrested. Bill, put down that hammer!
by The Real Jack Jones September 15, 2007
The practice of acting foolish or saying something foolish when the circumstance calls for an intelligent response.
The dumb-assery of the press led to an immediate breakdown in communications, causing the riot to escalate into a battle between the police and the citizens.
by Grahame C. December 22, 2008