Donky arse

Donky arse i often used to say that someone has flat or misshaped ass

Guy 1: WoW that girl has a donky arse

Guy 2: oh shit you're right

Black arse

A black arse is a black person’s butt, usually someone from African origins.

Person 1: Do you eat black arse?
Person 2: No, I prefer white ones.

Arse like his father

Looks like his dad.

Ya can't blame that one on the milkman. He's got an arse like his father.

squeeky arse

Squeeky arse:
To walk in public following rectal intercourse (aka anal) and waddle/not walk properly indicating a problem with your anus.

Friend 1: "hey look, he's got a squeeky arse"
Friend 2: "yeah, recon he has just taken it?"
Friend 1: "deffo, and recently aswell"

Call me a witches' hat and slap me on the arse

A common Aussie slang term usually used when something exciting or unexpected happens.

"Man, call me a witches' hat and slap me on the arse, that was unexpected."

Arse hat

A person, child or pet who is annoying, irritating, troublesome and onerous to those around them.

OMG my cat is such an arse hat. He won’t make friends if he keeps biting the other animals faces.

genie-arse

1. A genie's ass

First definition of genie-arse by El-Cid on the youtube channel OneyPlays' 4th episode of "Crash Bandicoot N. Sane Trilogy (Crash 1)" playthrough.

Source: www. y o u t u b e .com/watch?v=S9LsGirlzec

1. Look over there! That's a fine genie-arse if I've ever seen one!

2. Imma get som fine genie-arse tonight ( ͡° ͜ʖ ͡°) You know I'm all about them genies ( ͡° ͜ʖ ͡°)