From an email I recieved

An older rancher went to the doctor to have a cut sewn up and they got on the subject of Obama. The doctor asked the rancher what he thought of the president.
The rancher replied that Obama was just a post turtle.
The doctor was puzzled having never heard the term post turtle before asked the rancher to explain.
Well when you're driving down a country road and you see a turtle perfectly balanced on a post, that's a post turtle.
The rancher could see that the doctor was still puzzled so he continued.
You know he didn't get up there by himself, he doesn't belong up there, he doesn't know what to do while he's up there,and you just wonder what kind of idiot put him up there to begin with.