The Funniest Banking Joke in Ages!

I guess we all need a few laughs in this time of financial turmoil.
I was at my bank today; there was a short line. Just one lady in front of me, an Asian lady who was trying to exchange yen for dollars. It was obvious she was a little irritated. . .

She asked the teller, 'Why it change? Yesterday, I get two hunat dolla fo yen. Today I only get hunat eighty? Why it change?'

The teller shrugged his shoulders and said, 'Fluctuations.'

The Asian lady says, 'Fluc you white people too!'