Once upon a time in the clear morning.
Einstein: Morning Mr.Beans
Mr. Beans: Morning
Einstein: This morning will be good for a quiz. I'll ask you some puzzle, if you cant answer so pay me $10. Make a puzzle for me too, if i cant answer i'll give you $100
Mr. Beans: Okay
Einstein: Start from you
Mr. Beans: mmmm......... what animal which have a single hair, if he cross the road his leg is 3. When it's back to home, his leg become 4?
Einstein: I dont know.
(Einstein give $100 to Mr. Beans)
Einstein: Wait, so what animal is it?
Mr. Beans: Dont know.
(Mr.Beans give $10 to Einstein)