O

oath

Certainly! (various versions, including "My oath", "By oath", and "Fucking oath".

ocker

Australian

off yer face

offside, to get

To be in bad with someone

offsider

oil

News, truth - "the real oil"

on side

To be in a satisfactory position or situation

op shop

Opportunity shop, a shop selling donated goods and clothes to raise funds for charitable purposes

outer, to be on the

Out of favour, to be unpopular or unacceptable

out on one's/it's own

To be beyond reproach or equal

out to it

Dead drunk, fast asleep

Oz

Australia

pack a sad

Refuse to talk to someone, equipment which suddenly no longer works said to have "packed a sad".

packet of salts, to go through like a

To run or cut through (opposition etc.) quickly and easily.

paddock

Usual name for agricultural field (unlike some parts of Oz where it's more of a slang term), slang for sports field

pair of bastards on a raft

Poached eggs on toast

Pakeha

Palangi

Pacific Island term for Pakeha, also Palagi (both prn Pa-'la-ngi)

park over

To give something 

party pooper

Being negative

pavlova

Meringue-like dessert with soft centre named after Russian ballet dancer Anna Pavlova who toured NZ early 1900s. Often shortened to pav.

piece-of-piss

Easy 

pie-cart

pig's arse (bum, ear)

Expression of disbelief, disagreement, derision.

pike out

To give up when the going gets tough

piker

One who gives up easily (see pike-out), shorks responsibility, leaves the party early.

piss awful

Extremely awful

pissed

pissed off

Angry, as in "I'm really pissed off!"

pisshead

Heavy drinker, alcoholic

pissing down

Raining heavily

piss around

Waste time or effort in a futile manner, ie fart about

piss up

Social gathering with alcohol

plod

Friendly term for local policeman

poked

Exhausted

pollie

Politician

pom

English person (not used by PC people), eg "whinging pom" (very rarely pommy - except by English people themselves). 

poop

Excreta (not information or ship's stern)

possie, pozzie

Position, situation, predicament

pot on, to

To inform on, to betray.

pottle

Small container

Q

quack

General medical practitioner

Queen St farmer

Investor in farm land (after main street in Auckland)

quiet, on the

On the sly, secretly

R

rack off

Go away (said in anger) 

rage

Noun:  an exciting and noisy (especially adolescents') party or event. Verb: to behave in a noisy, excited or abandoned way at such a party or group, to dance in an abandoned manner, to be high on drugs.

ralph

To vomit. (also chunder)

rark up

To scold or rebuke severely, to stir up.

raro

Powdered fruit drink - sometimes applied to other cordial brands too, abbrev of 'Rarotonga' although product not from that tropical "paradise"

rat

"Like a rat up a drainpipe" = very quickly. 

"Not to give a rat's arse" = not to care much about

rattle yer dags

"Hurry up, get a move on!"

ratty

Angry, irritable

ra(r)zoo

Also "brass razoo. A small or worthless(imaginary) coin.

read

"You wouldn't read about it!". Expression ranging from disbelief and chagrin to tolerant surprise, you wouldn't believe it!

reg(g)o

A car registration windscreen sticker

rellies, rels

Relatives

rhubarb season, up yours for the

Another version of "up yours", an expression of contempt or rude dismissal (heard used most effective by women, with reference to menstruation, ie. a taboo.)

right as rain

Perfect 

right, she'll be 

It's okay, it will be all right in the end, Don't Worry, Be Happy

right! , too

Emphatic agreement.

ringbark

To kill a tree by cutting away a ring of bark from around the trunk. A debilitated person. Also a circumcised man.

ring-in

Also ringer. A fraudulent substitution.

rip into

To attack a person or task vigorously, to 'tear a strip off' a person.

road, to be sent (to go) down the

To be sacked from a job, made redundant

root

Have sex; rooted - stuffed

rooted, get

Contemptuous dismissal. "Get rooted!"

ropable, ropeable

Very angry, very 'wild', etc (eg, "I was ropeable when the mayor said he wasn't going to take any notice of public opinion.). Fit to be tied.

rottie

Rottweiler breed of dog.

rough as guts

Unpolished (referring to a person)

RSA

Returned Servicemens Association  "Going to the Rahza" means going to the RSA.

rubbish, to

To criticise severely.

rugby

Usual football (not normally called "rugger"), see also league, touch