During a flight back to DC at the very start of Obama's campaign, he found himself seated beside a very young girl reading a book. He turns to the little girl and introduces himself and tells he he has heard that talking to your seat mates help pass the time on these long flights. The little girl slowly closes her book and asks what he would like to discuss. Obama tells the little girl he is running for president and plans to change the world.
The little girl thinks a moment and says, "before you tell me your plan for changing the world, I have a question for you. A horse, a cow and a deer, all eat the same thing, grass. Why is it that when a horse craps it is large horse apples, when a cow craps it is a large flat cow patty, and when a deer craps it is small little pellet droppings?
Obama thought about this for a couple of minutes and admitted he didn't know. The little girl said to the president..."How can you expect to change the world if you don't know shit?" and re-opened her book.