A chinese man at the Foriegn Exchange counter in London:

 "Yestaday, I give you Chinese money and you give me 20 pound. Today, I give
 you same money, you give only 19. Why is it?"

 The clerk replies, "Sir, it's the market. Fluctuations."

 The Chinese man gets an enraged look on his face and yells back, "Fluck you
 Asians? Well, Fluck You British!"