Top definition
A sanity wank is when you get so wound up and frustrated and the only way to cure it is via masturbation, so to stop yourself going insane you have a sanity wank
Sarah is such a tease, she was winding me up all night, I had to have a sanity wank when i got home or I swear I would of gone insane
by Lostpure August 25, 2010
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