The art of taking a shit whilst having a wank. Great way to save time. Also heightening the pleasure factor, as a big firm dump squeezes past the male g-spot.
I had a monster shit last night. Time was not on my side, so I decided to double up and had myself an awesome shank.

Or....

My flatmate left the bathroom door unlocked last night, I accidentally walked in on him Shanking!
by Bandicles January 11, 2014
From Shit + Wank, to masturbate whilst taking a shit.
I want a wank but I really need to take a shit and there isn't time for both! I know, I'll have a Shank!
by Mvfekker January 01, 2014
The most dangerous form of shiv involves the prisoner using matches or a lighter (both felony level contraband) to burn a toothbrush into the shape of a spike. The spike is most commonly stabbed into the eye or genitals of the intended target.
He put his eye out with his toothbrush shank
by dmc375 November 15, 2011
The act of shiting and wanking at the same time
I was in a horny hurry this morning had to shank
by Shell2784 May 20, 2011
To walk up behind someone and pull their pants down by surprise, usually exposing their underwear or genitalia.
Guy 1- "yo man, did you hear what happened to Grace?"
Guy 2- "nah, what?
Guy 1- "Cara shanked her! Now everybody knows she wears red underwear!"
by Al-Tazey December 06, 2010
To wank while shitting, honestly.
guy1: Oh man, that shit was taking forever so i deceided to shank.

guy2: Thank you for that mental picture....
by shank-head July 29, 2009
A more polite way of describing a mans "penis"
I'm missing Shah's Shank.. Means I'm missing Shah's penis etc.
by persianheart September 22, 2008

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