We Aussies have as good a knack for mangling the English language as we do for thrashing the poms at cricket.
Just found this
amusing site on the subject.
Here are a couple at random:
Shank's pony
to travel on foot.
shark bait
a person that swims further out to sea than others.
scumbag
a low down despicable person.
cackleberry
egg.
cactus
dead; ruined; spoiled.
cake hole
mouth.
call 'Ralph'
to vomit.
camp as a row of tents
a homosexual male.