Dumbasstitude 

When someone's attitude displays dumbass tendencies, ideas, and just general lack of using ones mental faculties more than should ever be allowed.

If everyone shared your dumbasstitude, this company would be out of business

Dumbasstitude by ITGrrl May 27, 2010

Dumbassitude 

The act of being a dumbass and getting an attitude when someone tells you that you are being a dumbass

Man my friend had a bad case of Dumbassitude after I told him to stop being a dumbass and trying to dump his girl

Dumbassitude by TinShells December 4, 2016

dumassitude 

referring to the general stupidity people show as "dumassitude" by vehemently rejecting any known common sense.

I blame the dumassitude

dumassitude by oatmeal1979 April 8, 2011

dumbassitude 

The state of being dumbed down, unconsciously and through inaction, by an external societal force, such as conformity, the media, or the government. Used by legendary hiphop artist Chuck D when he lectured at Saint Joseph's University.

"What we are facing today is the dumbassitude of the American people . . . can I say 'dumbassitude'?"
- Chuck D, Saint Joseph's University 2/11/03

dumbassitude by Illitariat February 12, 2004