noun. A dumbass above all others! The assiest and dumbest of the lot.
Real citation: "Can the choice of a pot-smoking arch-liberal over a coke-snorting arch-dumbass really make a difference? You bet. You'd better believe it. When I picture my president, I want to feel like he'd be all relaxed... We definitely don't need that SOB (Son of Bush) Mr. GWB Jones with his twitchy, stinky finger poised over the giant, red, candy-like button, folks."
(Nov. 6, 2007, Deep in the Bush, http://rantose.com/archives/bush_means_luv/bush_means_luv.html)
Made-up citation: "I have always aspired to be an arch-dumbass... But I am only a lowly numbnuts! Alas!"