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Zero, When you make a "dick fist" with your hand it looks like the number 0
Proper execution of the use of the term would be as follows:

Bill: "How many licks does it take to get to the tootsie roll center of a tootsie pop?"

Joe:(Make a dick fist) "Dick Fist, I don't eat that crap."
by TMDJ January 07, 2011
1. An exaggerated expression for describing male genitalia.
1. The act of applying (with force usually) one's dickfist onto another.
Tachus said that he's gonna dickfist you if you don't follow his orders!
by Aryolo April 23, 2008