wonderful,no?!!!!

An American gets on a plane and finds himself seated next to an Iranian lady.
He immediately turns to her and makes his move. "You know" says the American: I've heard flights will go quicker if you strike up a conversation with your fellow passenger. So let's talk.
The Iranian who had just opened her book closes it slowly and says to the American "What would you like to discuss?"
Oh, I don't know, says the guy, smiling, how about? Nuclear Power?!
OK, says the Iranian. 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 American guy is dumbfounded. Finally he replies:
I haven't the slightest idea.

So tell me, says the Iranian, how is it you feel qualified to discuss Nuclear Power? When you don't know shit?!!!!!!!!!!!!