One of many possible fun uses of the über prefix. An über moron represents the pinnacle of pea-brain, the apex of asshole and the depth of dipshit. An über moron embodies the highest (or is that the lowest) level of stupid, home-grown, industrial strentgh, heavy duty idiocy.
Damn, we just convinced Frank that he grew up on a mayonnaise farm. Now he's looking it up online. Man, he's such an über moron!