Not sure about common. I guess it depends on who you hang around.
Common Australian Idioms Explained With Funny Illustrations - DesignTAXI.com
Just a few. Happy Australia Day everyone! I love that Brissie made it on here lol!
These are bush Aussie sayings. I'd say they come from the english heritage of cockney sayings when Australia was settled by english convicts.
Australian Sayings Map - Funny Slang Phrases - Unique, Unusual Gift for Birthday, Australia Day, Leaving, Thank You
Australia map made from australian slang words in vector - by lifeofriley on VectorStock®
Englishness, Fucking Brilliant! & Fucking Funny
25 Of The Most Australian Sayings Ever
Things Australians Say Vs. What They Mean