Guy gets on a plane and finds himself seated next to a cute blonde. He
immediately turns to her and makes his move. "You know," he says, "I've
heard that flights will go quicker if you strike up a conversation with
your fellow passenger. So let's talk." The blonde, who had just opened
her book, closes it slowly and says to the guy, "What would you like to
discuss?" "Oh, I don't know," says the guy. "How about nuclear power?"
"OK," says the blonde. "That could be an interesting topic. But let me
ask you a question first. A horse, a cow, and a deer all eat the same
stuff --grass. Yet the deer excretes little pellets, the cow turns out a
flat patty, and the horse produces muffins of dried poop. Why do you
suppose that is?" The guy is dumbfounded. Finally he replies, "I haven't
the slightest idea." "So tell me," says the blonde, "How is it that you
feel qualified to discuss nuclear power when you don't know shit?"