Quirky Sally's definition is fine, but the word originated from surfer slang in the early sixties.
Cowabunga! Look at her ride that wave.
by sgwm April 19, 2005
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The act of mounding cocaine on a (usually Columbian) woman's asshole, placing your face directly over said mound, and inhaling deeply through your nose as she farts. Subsequently, inducing a sense of euphoria that can only be expressed as Cowabunga!
"Hey, man how was it last night? Sounds like you two got pretty crazy.
"Yeah bro! Shit was off the hook! She gave me the Cowabunga!"
"Sick homie! You should go was your face though before we hit up the frat house"
by Mr. Tummy Styx November 21, 2018
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Someone who throws a cow, in a cow throwing contest.
Derived form the sport of cow throwing. The participant in the event.

Bung as in to throw, makes the entrant a 'Bunga'.
The winner of the world cow throwing championships, is crowned world champion Cowabunga.
by The Scope September 06, 2012
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a singular word expressing appreciation of an amusing physical action.

I took to saying it to my bulldog and pitbull in appreciation of their leaping on the kitchen table or doing something otherwise physically dramatic. Such as falling off the couch. I believe I picked it up from Homer Simpson.

It'd be quite cool if the "American Indian" history is accurate.
Lula the bulldog leaps vertically to murder a balloon: Cowabunga!
by Crazy Lula April 12, 2009
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chinese for i'm so confused right it's not even funny. you can use it at parties or religious meetings. you can even use it at you cousin's funeral. all the chinese men tell it to their doggies when they are going for walks. or when they go poopie in their pants. or this word can mean iLove you in arabic.
chinese men gather for a funeral.
chinese man 1: hey. what's up?
chinese man 2: COWABUNGA!
chinese man 1: shweeet.
by JAM; March 31, 2009
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