Einstein & Mr.Bean sitting next to each other on a long flight..
Einstein says,"Let's play a game.. I will ask you a question,if you don't know the answer,you pay me only $5 and if I don't know the answer,I will pay you $500.."
Einstein asks the first question: What's the distance from the Earth to the Moon..?
Mr.Bean doesn't say a word,reaches his pocket,pulls out a $5..
Now,it's Mr.Bean's turn..
He asks Einstein: What goes up a hill with 3 legs and comes down on 4 legs..?
Einstein searches the net and asks all his smart friends.. After an hour he gives Mr.Bean $500..
Einstein going nuts and asks: Well,so what goes up a hill with three legs and comes down with four..?
Mr.Bean reaches his pocket and gives Einstein 5$