huge pistol of some sort I.E. .44 mag, .454 casull, .50AE, .500 S&W
guy #1: check this piece out

guy#2: holy shit that things a fucking handcannon!!
by carlbittner October 25, 2008
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To prevent yourself from ejaculating for 2 months, then applying tartar sauce to the head of your penis. Then masturbating with a condom on over the sauce. Before you finish you cut the rubber so it's just on you head. You then place a yamaka on your hard head and use the power of your love fuel to project it at any given target.
Dude, I fired my Hebrew Handcannon clear across the street last night!
by The Dean 88 November 02, 2009
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