I got so confused when I first moved to Adelaide by the following:

"flat out"
"Rocked up"
"goodonya" (for those of us in North America - good on you)

Slang that stuck:

"Sweet as!"
"heaps" (as in "heaps good friends")
"reckon"

Fun thread!!! Cheers big ears!

Ophelia

PS - I'm curious how the Aussies feel about Steve Erwin...a.k.a The Crockadile Hunter?