hey Strategia do you realise your reply is a phrase which is the subject of much joking itself. Maybe you are secretly Australian
. Ok since you insist I'll explain.
First off Kiwis bear a grudge against us for a cricket match we had against them once. As a result a friend of mine, while visiting, New Zealand, saw graffiti on a wall saying "Australia sux". An Australian clearly came along because he wrote underneath "New Zealand Nil". The joke is that the New Zealand accent pronounces "I" as "u" (at least to Australian accents). 6 to 0.
There are a plethora of Australian jokes directed at Kiwis, most notably insinuations about the amount of sheep there are in New Zealand compared to the human population. I apologise for posting such obscure humour, but I couldn't help it if we were placing jokes concerning puns on sucks.