Two strangers were seated next to each other on the
plane when the first guy turned to the second and
said, "Let's talk. I've heard that flights will go
quicker if you strike up a conversation with
your fellow passenger."

The second guy, who had just opened his book, closed
it slowly, took off his glasses and said to the first
guy, "What would you like to discuss?"

"Oh, I don't know," said the first guy. "How about
nuclear power?"

"OK," said the second guy. "That could be an
interesting topic. But let me ask you a question
first.

"A horse, a cow, and a deer all eat grass. The same
stuff. 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?"

"Jeez," said the first guy. "I have no idea."

"Well, then," said the second guy, "How is it that you
feel qualified to discuss nuclear power when you don't
know s*&t?"