I put this in my 3BT blog as well, I just enjoyed it so much I had to share it.
In The Wise Man's Fear by Patrick Rothfuss, Kvothe tells a story around a campfire. Condensed: A boy is born with a gold screw in his belly button. No one knows what it is for -- not his parents or grandparents or the wise folk of the town or anyone he meets in his travels. Eventually he meets with the most powerful king in the world and asks him about the gold screw in his belly button. The king opens a gold box on a gold platter and behold, there is a gold screwdriver. He takes it out and turns the gold screw in the boy's belly button. Once, twice, three times. And the boy's ass falls off.