1. a male prison inmate fucking another male prison inmate in the ass
2. succesfully playing a practical joke on someone

Originally, the word "punk" was prison slang, meaning the first defintion. the second comes from the idea that fucking someone in the ass is a sign of disrespect (such as male dogs humping one another to show dominance, instead of sexual attraction, which could very well be the motive behind prison rape as well)
"here come' bubba, you 'bout to get f'd in the a' ok?"
by Honest Jackson November 10, 2004
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n.
the act of throwing your own ejaculate at someone, most often at their face.
Monkeying, that's shitting in your hand and throwing it at someone.
Buttercupping, thats farting on your hand and cupping it over someone's face.
Punking, that's the apotheosis of bodily fluid weaponization.

"Aaaaargh, my eyes!"
"You just got punked, bitch."
by trollbog December 8, 2011
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A punk rocker whose punkness puts them above and beyond the standard for being punk. Gratuitous spikes, studs, multiple buttflaps/front flaps (aprons). Permanently charged mohawk. Well practiced sneer.
I went to that show, but just got beat up in the pit by a bunch of punk punks.
by fergutron November 4, 2008
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Punk is not about a certain hair colour, style, or music, although music does take a large part in most punks lives.
Punk is about liking what you like, being yourself, saying what you think and FUCK ALL THE REST.
You don't need a two foot high red mohawk to be a punk, although that is wicked cool.
You don't need sleeves, a backpiece, or any tattoos at all to be punk.
You don't need a Misfits, Casualties, Sex Pistols or any band like that jacket to be punk.
You don't need anything to be punk except for awareness, self respect, respect for others and an open mind.

PUNK IS NOT DEAD.
I don't care if you wear drainpipes or not, you're a punk cos you're not some dumbass prat who's a fucking loser poser who needs to get his shit straight!
by Parker.:) May 28, 2007
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According to a 1950's slang dictionary the true root for the label "punk" was "a young male companion of a sodomite."
That boy in the red light district on the corner is nothing but a punk.
by Genii January 11, 2008
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Pre-Sid Vicious, pre-any stringy young male, "Punk" referred to the passive or "bottom" partner in a male-on-male prison sexual relationship. (The dominant or "top" man was called the "jock" or "jocker".) Since the punk was usually the scrawnier and younger of the two, that meaning of the term escaped into the general culture and eventually became attached to young, rebellious men fronting kick-ass rock bands.
(Description of a prison killer in Truman Capote's IN COLD BLOOD 1966): "Just two jockers fighting over a punk."
by al-in-chgo June 12, 2010
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