billabong 

A brand of surf wear or beach clothing that is not for people who want bargain basement clothing. Basically nice clothing that is well worth the price. ( yes, also an Australian water flow).

Girl: nice shorts! Dude: smiles. Billabong.

billabong by Oldscool62 April 19, 2022

Billabong 

Billboard

That billboard is called a billabong in the states!

Billabong by kappagunnakap March 21, 2023

Billabong Boys 

The Australian sick cunts at there prime. The Billabong Boys are the most Aussie, Aussies you'll ever see. Their YouTube channel is only small but it's sure is Australian.

*Billabong Boys fan* "Oi give us ya' phone I wanna watch Billabong Boys new shit aye"

*Brother of fan* "Mate if your gonna watch it get the whole family" *Brother calls in family and sets up TV*

*Dad of fan* "Far mate that was sick shit aye"

Billabong Boys by Billabong Boys September 4, 2017

Billabong day 

On September 23 every year all boys are encouraged to wear Billabong.

Omg, tomorrow is billabong day.

Billabong day by Vshshdhsjs September 23, 2022

Black Billabong

A godlike figure in modern day society. Originally raised by swans, he was kicked out of the house and went on to become a master kazoo player and steal the World’s Most Generic Sink. He has fought the likes of Bill Patton and Bone Cow. His name could be used as a compliment to someone.

Woah Kevin! Black Billabong would be proud of you!

Black Billabong by anyolsink February 28, 2019

Dirty Billabong 

Australian Sexual colloquialism. Refers to Anal sex.

'She asked me to do it in her Dirty Billabong'

Dirty Billabong by scroobsy April 29, 2012

Wetpong Billabong

When you're sitting on the toilet and you have a feeling two blokes from Alice Springs are gonna have a disagreement and play ping pong with your nutsack using frying pans.

Hey Wongi, I feel like me sack is gonna get a good Wetpong Billabong if I sit here too long, mate! Give me a handy with me petrol brandy!

Wetpong Billabong by CyberBoongTyler October 25, 2025