When your thumb is numb and stick it up your bum like little jack horner did in his self titled poem. When you pull out your thumb, there's a nugget on it.
"...Eating a Christmas pie;
He put in his thumb,
And pulled out a plum,..."*-
I'll be back in 10 I gotta pull a little jack horner
by Anderjeet Singh Curtinder December 28, 2011
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little jack horner
sat in a corner
Eating a Christmas pie;
He put in his thumb,
And pulled out a plum,
And said 'What a good boy am I!'
by ssssssrrrrrrrrtttttttt August 20, 2009
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The popular children's rhyme reads:

Little Jack Horner
Sat in the corner,
Eating a Christmas pie;
He put in his thumb,
And pulled out a plum,
And said, "What a good boy am I!"

To be "Jack Horner-ed" in the modern/urban sense is a wholly awkward moment for any young person. This unexpected event takes place when two individuals are taking part in any type or degree of consensual sexual activity, when one partner decides to attempt a very risky maneuver by inserting his/her thumb into a certain orifice of the other partner which traditionally only operates as an exit for digestible waste. This NONconsensual activity generally results in an abrupt ending to the sexual/physical relationship, as well as any emotional relationship that had previously been forming. In most cases, this marks the final interaction between the individuals.

The origin of this term can be traced as far back as Kalamazoo, MI (Western Michigan University) where it is also popularly referred to as being "ZD-ed."
Let's say a young man is watching a Disney movie with a pretty girl he recently met. In the nights prior, they had slowly advanced their degree of sexual activity to a comfortable point. Justly, he felt certain enough of his the budding relationship to share it with other members of his close social group. On this particular night, the man propagates sexual activity. He is excited to realize his partner is also up to the task. As she begins to perform oral sex on him, in fact, near the height of the experience, the young man is alarmed by the presence of a thumb working into his anus. Quickly clinching, hoping to intercept the errant advance, he reaches for his pants and knows he has been Jack Horner-ed.
by AV13 April 20, 2013
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Describes a person who has no remorse whatsoever and does not care about doing good at all, making him/her irredeemable. Also known as "Jack Horner Situation".

Quick reference to Puss in Boots: The Last Wish
The bully might be in the Big Jack Horner Situation when he grows up.
by et mrbe March 8, 2023
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the act of thumbing a girls anus in an attempt to pull out a turf plumb
We were really going at it last night , then gave her the “Little Jack Horner” while reciting the nursery rhyme.
by Jwitt October 11, 2017
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When you talk a big game on the golf course but end up doing the Texas Hook’em horns and sticking one in the stink and one tickling your taint all the way back to your car to try and get your mojo back at an old age. All of this while your daughter watches in disgust.
Ema decided to get out of the cart after Chris couldn’t hit a drive 50 yards and Hornered himself.
by Rocketboy August 4, 2023
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When someone comes and changes the position of your chair without you knowing.
"Man, this chair feels like it's been hornered."
by Chelsie1998 August 22, 2023
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