Hellz Yeah: Toriyama!

The Kamehameha Wave, performed by Roshi (its creator) and Goku (who pulled it off after seeing it only once!).

Roshi used the Wave to put out a fire, after Bulma promised to spend some “alone time” with him.  After he put out the fire (unfortunately destroying the Ox King and Chi-Chi’s home in the process), she forces Oolong to shapeshift into her lookalike and go in her place.  Unfortunately for her, Oolong decides to extract his revenge by flirting with Roshi and letting him “puff puff” her chest.