Gabba Lights

Gabba Lights (Photo credit: Roger the Sheep)

G’Day : hello!
Gabba : Wooloongabba – the Brisbane cricket ground
GAFA (pron. gaffa) : the big nothingness of the Australian Outback. Great Australian F**k All.
Galah : fool, silly person. Named after the bird of the same name because of its antics and the noise it makes.
Garbo, garbologist : municipal garbage collector
Give it a burl : try it, have a go
Gobful, give a : to abuse, usually justifiably (“The neighbours were having a noisy party so I went and gave them a gobful”)
Gobsmacked : surprised, astounded
Going off : used of a night spot or party that is a lot of fun – “the place was really going off”
Good oil : useful information, a good idea, the truth
Good onya : good for you, well done
Goog, as full as a : drunk. “Goog” is a variation of the northern English slangword “goggie” meaning an egg.
Greenie : environmentalist
Grinning like a shot fox : very happy, smugly satisfied
Grog : liquor, beer (“bring your own grog, you bludger”)
Grouse (adj.) : great, terrific, very good
Grundies : undies, underwear (from Reg Grundy, a television person)
Gutful of piss : drunk, “he’s got a gutful of piss”
Gyno : gynaecologist