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The art of pleasuring yourself whilst in a location or position that provides a reasonably high chance of getting caught in the act.
"Risky wank"

Having a masti in your bedroom with the door open, whilst there are other people in adjacent rooms.

Having a wank in the bottom whilst your sibling/friend/anyone is on the top bunk.
by Littleonebigfun October 28, 2013
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