Ignoranusy Share definition Flag Speaking both ignorantly and abundantly all while retaining the characteristics of an asshole. These people keep trashing Metal Gear Solid 4 when they don't even own a Playstation 3....ohhh the ignoranusy!! Ignoranusy by Dustin C Mills June 19, 2008 0 0 Get merch Get the Ignoranusy mug. Buy Now — $32.95 See more merch