Australianisms

arvo  ->  afternoon
bathers  ->  swimsuits
Bogans  ->  Australian hicks
bush tucker  ->  food from the bush (edible plants, etc.)
Chemist  ->  Pharmacist
chips  ->  fries (but potato chips are also chips)
crack on  ->  come onto, hit on
cuppa  ->  cup of tea
Esky  ->  travel cooler
fairy floss  ->  cotton candy
footy  ->  Australian Rules Football League (AFL)
fringe  ->  bangs (hair)gas  ->  propanegoon  ->  terrible cheap wine in a 1-2L box
heaps  ->  lots
hotel  ->  pub
How you going?  ->  How are you doing?
I reckon...  ->  I believe/think/feel...
ice block  ->  popsicle
jug  ->  pitcher
keen  ->  eager
kindie  ->  kindergarten
lollies  ->  candies
Macca's  ->  McD's
mate  ->  friend (everyone knows this, but yes, it is actually used all the time)
mozzie  ->  mosquito
op shop  ->  thrift shop/second-hand store
petrol  ->  gas
push bike  ->  bicycle
rock up  ->  show up, arrive
school  ->  high school
She'll be right  ->  It'll be alright
singlet  ->  tanktop, sleevless cotton undershirt (similar to a wifebeater, but not necessarily 
ribbed)
slab  ->  a two-four of beer/cider/etc.
sunnies  ->  sunglasses
surf life saver  ->  lifeguard
swag  ->  rolled up bedding, usually a foam mattress, sleeping bag, and pillow, in a single 
person canvas tent/bag for camping, though also extensively used as a spare bed when 
staying over at a friend's

tea  ->  dinner

thongs  ->  flip flops
torch  ->  flashlight
tomato sauce  ->  ketchup
uni  ->  university
Ute (you-te)  ->  Utility vehicle, pickup truck
yiros  ->  shawarma
your/my shout  ->  your/my treat, turn to buy