I wonder if Australians are better at getting international slang than, perhaps Americans are, because of the constant exposure to cultures other than Australian. For example, Australian kids see Christmas cards with or tv specials with snow and learn young about the southern and northern hemispheres. I have adults in English classes here who lose their minds in classes if I talk about going swimming at Christmas. History at school tends to be European history, with an Australian unit chucked ('thrown') in. And TV is often American or British, and so the exposure to foreign slang in its natural context.
The talk of doonas here reminded me, I learnt 'duvet' from The Young Ones, and so I think most Australians tend to ease into slang pretty well. Oh, and also because in Australian you can substitute any word for any nonsense you feel like, and the onus is on the listener to understand what the speaker means...
eg 'I need a new dingus for the whatsit on me tele,' spoken with the appropriate hand-gesture should get you a new battery cover for the back of your remotey in any quality electronic supply shop.
[MENTION=28911]HarleyQQ[/MENTION] Yep, that's the one, thanks.