when skittles or a candy like it are shoved up a male or females ass and eaten during intercourse
Jack: How was your one night stand?
Allan: She was insane bro, she gave me an Australian rainbow.
Jack: Thats what im talking about
When your "down under" regions start to regrow hair after being recently shaved. Basically, a 5 o'clock shadow on your crotch.
"Man my balls are so itchy, I've got an Australian shadow".
A mohican shape shaving of the pubic hair.
(A mohican down under)
G'day John, banged a bitch last night with a great Australian Mohican.
Person 1: Sorry cunt but this is an Australian server, you didn't swear enough.
Person 2: Oh fuck shit cock ass-
An Australian necktie is a form of post-mortem mutilation in which the victim’s penis is pulled through a deep cut on the perineum left dangling out of the anus. It is the down under version of a Columbian necktie that first appeared in Colombia during the period known as La Violencia as a method of psychological warfare designed to scare and intimidate.
Man, Jon never should have hurt that escort. I heard they found his body by three pier and they gave him an Australian necktie.
A mullet but down under
When you shave your coochie/balls but not your asshole
I didn’t have time to shave everything before the hookup so I just went for the Australian Mullet
The act of motor boating a woman's ass, sticking as much of your face into the anal cavity as possible. Upon performing this act, she begins to involuntarily defecate (shits) in your face. Unphased, you continue with your fowl deed, flinging feces in all directions.
After giving Jenna an Australian Mudflap, my face was covered in poo and there was a fair amount of shit everywhere.