Knowledge...

Two strangers were seated next to each other on the plane, one was a Mensa genius, traveling incognito.
The guy turned to the cute blonde next to him and made his move. "Let's talk." He said. "I've heard that flights will go quicker if you strike up a conversation with your fellow passenger."
The blonde, who had just opened her book, closed it slowly, and said to
the guy, "What would you like to discuss?"
"Oh, I don't know," said the player. "How about nuclear power?"
"OK," said 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 grass. The same
stuff. Yet a deer excretes little pellets, while a cow turns out a flat
patty, and a horse produces muffins of dried poo. Why do you suppose that is?"
"Oh brother," said the guy. "I have no idea."
"So tell me," said the blonde, "How is it that you feel qualified to
discuss nuclear power when you don't know shit?""

thats funny shit! :D