Well, he has a dick, and since he's the only US president who had recent African descent, then you can be reasonably sure that he probably has the largest dick of any president.
But when I hear "he's a dick" I think more of somebody like Eddie Haskell, Wally Cleaver's best friend on that old 60s sit-com Leave it to Beaver. Eddie’s trademarks are his obsequiousness toward adults and his spitefulness to everybody else. In otherwords, Eddie is a conniving two-faced player. To me, that's a "dick."
Obama's not that. Like Clinton, he's an impatient man. And a visionary. And those two qualities have garnered him some bad press. Much of it deserved. But in my book he isn't a dick.