A Chinese man went into a bank and asked to change some Yen to Sterling.
After receiving his money he said "How come I come here yesterday with same amount of Yen but get less Sterling today?"
The bank clerk answered "Fluctuations"
The Chinese guy responded "Fluck you British too"
I'm guessing the Chinese man was more p***ed off that he was mistaken for a Japanese person. Japan's currency is the Yen. China's is the Yuan (often represented by the letters Rmb).