While stitching a cut on the hand of an old farmer, the doctor struck up a conversation with him.

Eventually the topic got around to politicians and their role as our leaders.

The old farmer said, "Well, as I see it, most politicians are 'Post Turtles' : 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 farmer saw the puzzled look on the doctor's face so he continued to explain. "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, he's elevated beyond his ability to function, and you just wonder what kind of dumb-arse put him up there to begin with.”

Best explanation of a politician I've ever heard.