Someone of extreme incompetence and stupidity who commits such actions as a retard
Because billy fell out of a tree he became a stupidiotard
The resulting offspring of 2 stupidiot parents. When a male stupidiot breeds with the female stupidiot, the resulting offspring will be one of two types. Roughly 1 of every thousand result in the rare "Bri-diot" (see definition) but nearly all offspring will be of the common "STUPIDIOTARD" type. This is a trifecta individual. 1/3 stupidity, 1/3 idiotic, and the last 3rd retarded beyond repair. When combined into a person a reaction occurs creating a mentally defective moron who's ability to breathe, let alone exist, defies the laws of science.
Person 1: Dude, how is it that someone that fuckin' dumb even exists?
Person 2: Because its dumbfuck parents managed to breed and they kept stupidiotard.
Person 1: Wow. The afterbirth would have been smarter...
Adj. : Conglomerate of the words "Stupid", "Idiot", and "Retarded." A descriptor for when someone is not just acting stupid, not just acting like an idiot, and not just acting retarded.
My buddy Sean is in a league of his own, we've come around to calling him stupidiotarded for all the dumb shit he does.