When a man is about to ejaculate during sexual intercourse, he pulls out, and shoots his semen on the belly of his partner. He then dips his pinkie in the "ink well" (his partner's belly button) and signs his name. For additional flair the man may extend the fingers on his signing hand to simulate the feather on a quill.
"He gave her his John Hancock. He even dotted his I's and crossed his T's."
by JackKirgen August 29, 2011
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when your getting on with your woman while she is on her period you pull out and try and write your name with the blood and dab it back in if you need more ink to print your name on her sheets to sign that you were there
i did the john hancock with lindsay and i had to put it back in a few times to spell my full name
by The king Friday September 18, 2013
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The act of of cumming on your partner's back during sexual intercourse, then signing it with a sharpie.
Last night I gave Jane the ol' John Hancock.
by Nav23 March 31, 2011
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The act of dipping one's penis in ink or paint and then slapping someone in the face with the inked/painted penis and leaving one's mark.
Jason: Haha, look at Joey.
Brendan: I know, Derek gave him a nice John Hancock last night.
by It's Poop Again August 10, 2011
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When a male ejaculates on a female's body spelling out his name in the process
Rich John Hancocked his girlfriend Becky in the coat room last night
by Jackalope Joe August 25, 2007
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when you pull out during anal sex and sign your name on their back with your poopy dick.
Don: You feel so good inside my ass....lets do this tomorrow...actually, lets get tatoos together.
Steve: I love you too, so for now I will just give you the john hancock.
Don: What is that?
Steve: Its when I sign your back.
Don: With what?
Steve: My dick.
Don: thats kinky. uh ah uh ah.....dont hurt me.
by pbrgirl September 23, 2005
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A place where the rednecks and chaw boys go to school maybe some whores but who cares. The bathrooms don’t work nor does the ceiling keep water out. Piece of shit place
John Hancock Academy is the worst school in America
by Leroy Gibbs Sr. December 13, 2018
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