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.