"The Scar on Obama's Head: Possible Causes"
Obviously its the number 666 tattooed to his scalp
Or maybe he was dropped on his head as a child
Or maybe a Kenyan lion clamped its jaws on BO's head
Or maybe it's a large colony of head lice
Or maybe he's an alien Manchurian candidate robot
Or maybe he just missed that strip the last time he shampooed his hair.
Or maybe Michelle hit him in the head with a 9 iron.