1 definition by Zombie in Training
ignoranus (ig-nor-AY-nuss), noun; a polite euphemism for the term "dumb ass;" an excessively oblivious, obnoxious, or otherwise intolerable person.
As Mary displayed her full-back-sized tattoo of Elvis riding a comet, some ignoranus asked her, "Did that hurt?"
by Zombie in Training April 10, 2012