Top Definition
Derived from an episode of Pokemon "The Pi-kahuna" Commonly known as "Tengen Toppa Humunga Dunga"
Humunga Dunga is a wave that comes once every 20 years and has only been successfully surfed by Jan The Surfer, and Victor The Surfer with his Pikachu, Puuka.

Humunga Dunga became famous because of a video stream of Pokemon episodes from Thevidyaspy AKA Tuxedo Mask.
"Hey guys, what's up."

"Watching Tengen Toppa Humunga Dunga"
"What's that?"
"HUMUNGA DUNGA. Hey, you can do it too."
"Weirdo."
by Dubblemuffin August 10, 2009

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