3 men are on top of a building having a throwing contest where they are supposed to throw something they have a lot of in their country. There's a Chinese guy, A Mexican guy, and an American. The Chinese guy throws a pair of chopsticks off the building, the Mexican guy throws a tortilla off the building, and the American throws the Mexican guy off the building.
(NOTE: This is not the best joke I have ever heard, but it is one of the better ones I can remember. The best joke I have ever heard and remembered is "A baby seal walked into a club.")