I  had a bunch of Australian dollars I needed to exchange so I  went to the currency exchange window at my bank.

I chose the  shortest line, just one guy in front of  me.

He was an Asian guy who was trying to exchange yen for dollars and he was a little agitated.

He asked the teller, "Why it change? Yestoday I get two hunat dolla fo yen. Today I get hunat eighty?"

The teller says,  "Fluctuations."

The Asian guy says, "Fluc you white guys  too!"