cowachunga 

A term used by overweight Aussies and Big Chungus

"Cowachunga my dudes" - a fat Aussie

cowachunga by Alfonzo3 September 12, 2021

Cowabunga it is 

An expression used to accept a challenge, wage war or defend one's honor by unspecified but extreme/chaotic measures.
In all instances it is a simple way of indicating that come what may, your decision is set in stone.

Her: If you don't pause your game right now, we're breaking up.
Me: Cowabunga it is.

Cowabunga it is by The Doctopus November 27, 2019

cowabunga 

(exclamation): Originating as a greeting by Chief Thunderthud (the only Indian ever to have a moustache) to the Peanut Gallery on the 50's television program "The Howdy Doody Show", the term was later adopted by surfers in the 60's.

Chief Thunderthud: Cowabunga, peanuts!
The Peanut Gallery: Cowabunga!
Surfer: Cowabunga, dude!

cowabunga by Vermont Ferret August 8, 2005

Cowabunga 

When you pull a girls bloody tampon out and swing it like a nunchuk and hit her in the face with it.

I had Saam in the shower last weekend, she had a tampon in so I gave her the cowabunga

Cowabunga by Browniebaby July 22, 2017

cowadunga 

A term of excitement

My I am so hyped, COWADUNGA

cowadunga by Itsyaboymc October 1, 2018

Cowabunga Cockfest 

A type of gay orgy where everyone participating is roleplaying Michaelangelo from TMNT. Orange is typically painted around the eyes of each participant either before or during the Cowabunga Cockfest, but not all of these events do this.

Person A: I went to a Cowabunga Cockfest yesterday. Person B: Sir, this is a Bass Pro Shops.

Cowabunga Cockfest by A SvddenZaz Account December 29, 2021

cowabunga 

An exclamation of rejoice from the early 1990s. Usually uttered by teenagers wearing neon colors. Brought to popularity by the ever-so-famous Teenage Mutant Ninja Turtles.

Leonardo: The pizza just got here!
Michaelangelo: COWABUNGA dude!

cowabunga by quirky sally October 12, 2003