When I went travelling Down Under I met a British expat in a pub in Noosa and he was banging on about hating everything in Australia, the people, the accent (even though he had picked up an Aussie twang himself) etc and he'd finish every other sentence with 'It makes me as mad as a cut snake', which was probably the most Australian sounding thing I've ever heard. I've tried using it over here but it just isn't the same.