Servo
Petrol station. Also where you buy a pie, milk and a bag of ice at 11pm.
Person 1"We're out of milk."
Person 2"Grab some from the servo on your way back."
"Pulled into the servo for a sausage roll and a Big M."
Where it's from
Short for service station, shortened the same way as arvo.

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While you're here
Afternoon. Used heaps by basically everyone.
No. Starting with yeah makes it sound a bit more friendly.
Genuine, true, no word of a lie. Also a question: "Fair dinkum?"
Toilet. Traditionally an outhouse down the back of the yard, now any toilet at all.
Used to explain something that's chaotic or a complete mess.
A bottle shop, where you buy grog to take home.