I'm sure I've got snog, chuffed, rip-snorter, and drongo right (kiss, excited, hilarious, silly). "Punched On" I'm not sure of, I'd probably go for the 50/50 here and end up with "opened a bottle".
"frog and toad" is clearly rhyming slang for "road", I'm surprised you even gave the rhyming part, so it's "get moving."
"done a stevo"--outright guess on this one, I'm thinking probably it's to give up your place in line. Probably I'd use the audience poll here.
"kangaroos in your top paddock" has got to be "crazy". (I would have said "stupid" if that was a choice.)
"Killing the sorts", another toughie for an outsider.... Can't imagine its derivation... gotta go with "it doesn't match" because it just doesn't sound like a positive expression. Time for the phone-a-friend lifeline.
"Stroppy" = irritable. Easy one, finally.
"having a big butchers'", to me that would mean chowing on a large hunk of meat, so I'll go with "eating a large meal".
"have a lend of you" = "put you to work", I think. Like "get you to lend a hand" or something.
"having a veg" = doing nothing. Yay, another easy one.
"coming the raw prawn"... Gotta go with "being unprepared" on this one. Showing up raw, instead of fully cooked.
"drink some piss": Knowing (or at least believing) that Aussies love their beer, I'll go with the alcoholic binge.