Top Definition
The act of masturbating before a night out. The safety wank is used to prevent testosterone levels rising during a night out 'with the boys' when surrounded by females.
Friend 1: "You on the pull tonight?"
Friend 2: "You had your safety wank yet then?"
Friend 1: "What's a safety wank?"
Freind 2: "You know.. a wank to tie you over whilst trying to get on a girl, so you don't blow ya load if she starts having a feel around.. ya know..."
Freind 1: "Oh fuck. Better go do that now. Thanks man."
by surpriseentry May 14, 2011

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