I had a bunch of Canadian dollars I needed to exchange, so I went to the currency exchange window at the local bank.
There was a short line, just one person in front of me -- an Asian guy who was trying to exchange yen for dollars, and he was a little agitated.
He asked the teller, "Why it change?  Yesterday I get two hunnat dolla fo yen - today I get hunnat eighty!  Why it change?"
The teller replies, "Fluctuations."
The Asian guy shouts, "Fluc you white guys too!"
 
