Most of the time when I use Australianisms -- like "realise," "no worries," or dates written dd/mm/yy -- I am very conscious of it. Which is not to say that I deliberately do these things just because they're Australian and I think that makes me cooler than you.

As I was proofreading my geography seminar paper, I saw I had written that Afghanistan was "different to" former Soviet Central Asia. I hadn't noticed that when I wrote it, which is odd considering that "different to" was the Australianism that most irritated me when I first encountered it.