Would you walk down a highway dressed up in sheets carrying a grenade launcher? This dumbass did

The Urban Dictionary defines a dumbass as being - noun/adj.1.) a stupid person 2.) a stupid decision 3.) george bush. I can say with some confidence that this guy meets the criteria and then takes it to a whole new level. Reuters reports that police have arrested an Arizona man who filmed his 16-year-old nephew walking city streets dressed in a sheet and carrying a fake grenade launcher in an apparent bid to test police responses after the Denver theater shooting.