airhead: stupid person.

ace: excellent, great.

Adam and Eve - Rhyming Slang for 'believe'

aggro - short for aggravation or violence

amber fluid : beer

anorak - geek, nerd.

apples and pears - Rhyming Slang for 'stairs'.

armpit: dirty, unappealing place.

arse / ass [slightly offensive] (1): backside.

arse / ass (2): an unworthy person.

arse about/arsing about - to fool around

arse-about-face: something that is in a mess or crooked

arseholed: very drunk

arvo : afternoon

Aussie : Australian

awesome: great and impressive.

backhander (1): a payment given, normally in a secretive fashion.

backhander (2): hit someone.

ball (1): a fun time.

ballistic - to go mad with rage

bang (2): a powerful effect.

banged up - to be put in prison.

bangers - another name for sausages.

barbie : barbecue, grill.

barf (1): vomit.

barmy - a foolish person, mad.

barney - row, violent argument.

beans: money.

beat: tired.

beemer: a BMW.

bent (2): 'stolen'.

biggie: something important.

biker: a motorcycle rider.

bikkie : biscuit

bitch [offensive] (2): complain.

bitchy [slightly offensive]: moody.

bitzer : mongrel dog (bits of this and bits of that!).

bladdered - very drunk

blag -  a robbery

bloke - man