A highly regarded professor from one of the best universities in the world, sat next to an old hay seed farmer on a plane. The professor was bored and thought he could make a little money by setting the old guy up. So the professor broke the ice and asked the farmer if he'd like to play a game. The farmer said, "sure, why not"
Professor: "I'll ask you a question and if you don't know the answer, you give me 5 dollars. Then, you ask me a question and if I can't answer it, I'll give you 200 dollars"
Farmer: "okay, shoot"
Professor: "what is the distance from Earth to the moon"
Farmer: scratching his head, then just handed him a 5 dollar bill
Now it was the farmer's turn to ask a question.
Farmer: "what animal uses four legs to climb a hill, but only three legs when going down hill?"
The brilliant professor racked his brain and finally went to his laptop, but had to concede that he didn't know the answer, handed him 200.00 and said, "okay, what is it?"
The farmer nodding off simply handed the professor a 5.00 bill and went to sleep.