Stranger on the plane

A stranger was seated next to a little girl on the airplane when the stranger
turned to her and said, ' let's talk. I've heard that flights go quicker if you
strike up a conversation with your fellow passenger.'

The little girl, who had just opened her book, closed it slowly
and said to the stranger, 'What would you like to talk about?'

'Oh, I don't know,' said the stranger. 'How about nuclear power or global financial crisis?' and he smiled.

'OK, ' she said. 'Those could be interesting topics.'

'But let me ask you a question first. A horse, a
cow, and a deer all eat the same stuff - grass, am I right?' asked the young
girl. 'Correct, spot on,' said the stranger. The little girl continued, 'Yet a
deer excretes little pellets, while a cow turns out a flat patty, and a horse
produces clumps of dried grass. Why do you suppose that is?'

The stranger, visibly surprised by the little girl's intelligence, thinks about it
and says, 'Hmmm, I have no idea.'

To which the little girl replies, 'Do you really feel qualified to discuss nuclear power & global financial crisis when you don't know shit? '