Playing a game for the Nintendo Wii that makes you look like you're pleasuring yourself.
"I got Wii Music, but I stopped playing because I was wiisturbating more than I was making music."
by NosLived January 15, 2009
Masturbating while affixing yourself to any active apparatus of the Nintendo Wii (Wii Balance Board, Wii Remote)
Little did Wii Fit know, I was wiisturbating!
by Anonybation October 25, 2008