To be "John Handcocked" is to have a man ejaculate into his hand - and with the semen still pooled in his hand - slap an individual across the face. The name derives from the man's proverbial "ink" which spouts from his "pen." He then claims what is rightfully his by marking his territory.

This is most appropriate at Ugly Sweater Christmas Parties, or when a prostitute gets out of line. Especially applicable to any girls that may own a California Tan boutique and hail from Appalachia.
Kristen: "Oh my god, you'll never believe what Paul did last night!"

Sarah: "What?"

Kristen: "He nutted in his hand and slapped me across the face with it!"

Sarah: "Oh fuck, Nathan has John Hancocked me all the time, it's not a big deal, he's just claiming what is his."
by Ugly Sweater December 11, 2010
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A signature. Derives from John Hancock's signature, which was written in large letters, on the Declaration of Independence.
Could you please put your John Hancock on this form so that I can turn it in?
by rieux November 29, 2003
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(n.) American shipping magnate and possible smuggler who became famous for his role in the American Revolution. He served as President of the Second Continental Congress, was famously a signatory to the Declaration of Independence, and later became the first post colonial governor of Massachusetts. In addition to these accomplishments, Hancock was a prolific author on the subject of masturbation. He wrote several authoritative treatises on the matter (several of which were banned on the orders of George Washington), and famously challenged the widely-held opinion of his fellow Founding Father, Dr. Benjamin Rush, that masturbation caused blindness and hairy palms.
John Hancock was one of America's most illustrious founding fathers and early sex educators.
by Dylan *@*@DaShizz@*@* July 30, 2009
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One's singnature(John Hancock was the first to sign the Declaration of Independence.)
All checks must have your John Hancock to prove that you wrote them.
by Light Joker May 22, 2005
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When you are having sex, you pull out to cum on your partners face then proceed to sign your name on their forehead so your partner knows who you are after you leave.
I gave that bitch The John Hancock before I left, so she knows my name tomorrow.

Dude, I went home with that hose beast last night from the bar and gave her The John Hancock, but I signed your name! You no talent ass clown!
by Jones Bitch! November 16, 2006
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One shizza guy. He signed the Decleration of Independence first. He totally owned the other founding fathers.
If I live in the 1700's I would so go clubbing with John Hancock.
by Shizzlator June 8, 2005
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When a man sticks his penis in ink and swipes it on another person's face.
After i sign this document, can I give you my John Hancock?
by Wccpubman February 9, 2011
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