While stitching up a cut on the hand of a 76 year old farmer, who's hand got caught in a cattle crush, the doctor struck up a conversation with the old man.

Eventually the conversation came around to Politicians and their role as our leaders.

The old farmer said, "The way I see it, most politicians are Post Turtles."

Not being familiar with the term, the doctor asked, "What's a Post Turtle?"

The old farmer said, "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 doctors face, so he continued to explain. "You know he didn't get up there by himself, he doesn't belong up there, doesn't know what to do while he's up there, he's elevated beyond his ability to function, and you wonder what dumb ass put him up there to begin with.
Best explanation of a politician I've ever heard.