"Normally" It's the key word here but it's utter bullshit when Aussies meet internationals even "English speaking north Americans" they struggle understand the "lingo" langauge, I believe something similar was posted here by me a while back.
It's a bit like a lot of Aussies go to quickly when talking or bend langauge to suit ourselves it translates normal between eachother but seems utterly retarded to people like you, I think it has a lot to do with the broad mix of different cultures (namely Skips, Greeks, Italians and Middle Easterns) that exist in a place like Melbourne.
So what happens is words get shortened "Afternoon" becomes "Arvo", "Breakfast" becomes "Brekkie" and acronyms are not exempt from this horrible corruption of the English langauge LOL is phonetically altered it's more or less pronounced "lulz" so it's now spelt "lulz" in anouther case "fuck off and die" is now more pretty much a swear word pronounced "Foad" similar to "Toad" but not in all cases "WTF" is still the full thing ie. "What the fuck".
Sorry to alert you to the fact that other people outside of Ontario, Canada may interpret the Queens a little differently than yourself old matey but such is life.