A person (usually a man) that acts so stupid you just wanna strangle them. They screw things up, say stupid stuff, and have nothing intelligent to say. Their voice is usually that of one Napoleon Dynamite.
Moron Man: "hey, man, got any weeeeed? ha.. ha.. ha"
Tanya: "Hey, man, you're a fuckernut! You're the biggest piece of trash I ever laid eyes on."