He's just really good with words. He can say real obvious things in a way that the average idiot can understand perfectly, and not mince words. He shits on people's cognitive dissonance. The fact that you don't know how to articulate your criticism of him, while he'd be able to talk circles around you, is as testament to his talent. Even if you have the same subset of knowledge to work with: he never had trouble getting his point across, and doing it in a funny way.