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When you sit on your hand for an extended period of time then proceed to masturbate. Your hand will have gone numb so it feels like someone else is doing it for you.
"Me and Dave combined the Blind man's wank with a Dutch Rudder last night"

"Really? I've got to try that! Sounds like a rush!"
by nialldthaitan September 29, 2010
Sex game, based on accuracy. The man covers his eyes using his hand or blindfold and attempt to jack off into the mouth of the woman.
3pts are gain for a throat shot, 2pts for a lip shot and 1pt for a face shot.

Warning: Can cause blindness!
Katie, grab the blindfold, i wanna have a blind mans wank
by Jiggaman April 14, 2005