The post turtle

The post turtle
A doctor struck up a conversation with a hard-working 75 year old rancher while suturing a mean cut on the old man's leathery hand. Eventually the topic got around to Obama.
The old rancher said, "Well, you know, Obama is a 'post turtle.'"
Unfamiliar with the term, the doctor asked him what he meant.
The old rancher replied, "When you're driving down a country road and you come across a fence post with a turtle balanced on top, that's a 'post turtle.'"

The old rancher saw the puzzled look on the doctor's face so he continued: "You know he didn't get up there by himself, he doesn't belong up there, and he doesn't know what to do while he's up there, and you just wonder what kind of complete m*o*o*n put him up there to begin with."