From Wiki

Australia has a wonderful collection of slang, terms and phrases unique to their brand of English. Sometimes Australian English is referred to as Strine.

See: About.com's list of Australian slang.

Example:

I'm as dry as a dead dingo's donger - I'm thirsty (get me a beer) *** A man's not a camel - I'm thirsty (get me a beer) *** I could eat the crutch of a low flying duck - I'm hungry (get me a snag)