Looks pretty good to me. I imagine a number of them are shared with the poms. "Up the duff" is more British that Aussie. Other slight alterations include:
boobley - never heard of this one
crack: (v) to suddenly express extreme anger or rage; to have a "break-down"
drongo: a really dumb guy, often used affectionately in response to a stupid action or remark
fart-arse: (always ~ around) screw off, waste time
yobbo: a rude or ignorant person; a loud supporter