A Hong Kong Tourist walks into a Sydney Exchange Bureau with HK$900 and asks
for A$.

The teller checks the days rate, and hands over A$120.

The grateful tourist says "Thank Velly mutch! Velly kind!" and walks off to
Kings cross.

The next day, the Hong Kong guy goes back, with another HK$900 and hands it
over.

the teller checks the rate, and hands over A$135.

The Hong Kong guy is very happy, and quickly pockets the cash & disappears,
chortling to himself.

"This Aussie velly bad math heheheheheh"

The following day he returns again clutching HK$900 in crumpled notes.

He hands it over to the nonchalent teller, who checks the rate, and hands
over A$96.

The Hong Kong guy does a double take, recounts the notes, and fixes the
teller with an incredulous stare.

"Hey, Terrer, yesterday I come wif money, you give many many dorrar, ormos'
One hun'red Firty five! Day before, you gif One Hun'red twenny, Today you
give onry nin'ey Six. Why You do to me like this?"

The teller replies calmly "Fluctuations Sir"

The apoplectic tourist screams back "Fluck You Aussies Too!"