Australian slang can be grating but it's not nearly as bad as ebonics, ghetto-speak or "blinglish" (i kid you not, it is a term. [black english = blinglish]). And at least australian slang is clever:
- Bag of fruit (suit)
- Dog and bone (telephone)
- Trouble and strife (wife)
The only real complaint I have with it is the tendency to change words by putting -y, or -ie on the end [stolichnya/stollly, barbecue/barbie] as it can be quite frustrating having a conversation with someone who insists on talking like that.

Now i know that most of this was taken from or adapted from British english and I'm not for a moment disputing that. What I am saying is that using rhyming slang and clever slang is a billion times better than the (popular) American slang which consists of abbreviations ['ho], and words that don't make sense [homie, shizzle]. I know that this style of slang has been adopted from African-Americans by MTV and music companies as a way of identifying with disaffected, white, middle-class, suburban teenagers (why the hell do they identify with Snoop?) but it's still crap, no matter where it came from.

If you're going to use slang then use imaginative slang, not just crass shite.