While stitching up the hand of a 75 year-old farmer, who cut himself on a gate while working cattle, the village doctor struck up a conversation with the old man. Eventually the topic got around to Gordon Brown and his appointment as Prime Minister.
"Well, ya know," drawled the old farmer, "this Brown fella is what they call a fencepost turtle."
Not being familiar with the term, the doctor asked him what a fencepost turtle was.
The old farmer said, "Well, when you're driving along a country road and you come across a fence post with a turtle balanced on top, that's called a fencepost turtle."
He saw a puzzled look on the doctor's face, so he continued to explain,
"You know he didn't get up there by himself, he definitely doesn't belong up there, he doesn't know what to do while he is up there, even though his legs are moving he's going nowhere cos his feet aren't on the ground and you just gotta wonder what kind of dill put him up there in the first place!''