This goes all-around. Not just players, but also execs, journalists, bloggers, commentators, chair umpires, message board posters, or other entities of stupidity.
I think De Villiears (or however you spell it) would make the best clown. His stage name would be Walt Clownsey and his signature act would be the pie in the face, general stupidity, and the foot in the mouth acts, as he has quite a bit of experience in all of those areas
No poll, as I would need WAY more than 10 choices