v. The action of inserting one's erect penis into the eye-socket of another person and proceeding to thrust your hips back and forth, thereby "fucking" their skull.
"Look at me while I skullfuck you"
The act of forcefully inserting one's penis in and out of a facial orifice of the human skull--hence, "skullfuck".
The most socially acceptable orifice to penetrate is the mouth, as this is already a widely accepted way of engaging in sexual activity; however, the eye sockets, nostrils and even ear canals can be engaged, depending on the partner's willingness to get a cock rammed into any one of the aforementioned orifices. What separates a typical blowjob from the skullfuck is the force and velocity required to achieve skullfuck status. For this, a popular scale has been invented by Aww Smeh M, measured in "skullfucks" (sFk).
A female performing oral sex on a male at a moderate intensity would create about 0.00001567 sFk, whereas for a typical blowjob to be considered a skullfuck, one would need to generate at least 0.005 sFk of force, which only the hips are capable of doing.
The most intense skullfuck ever recorded was performed by Chuck Norris, who skullfucked his victim so hard it generated 49 sFk and therefore vaporized his victim's skull. The resulting orgasm from the aforementioned Chuck Norris skullfuck is typically referred to as an "avalanche" by us mere mortals.
Skullfucking usually results in the female gagging, so sufficient practice and cock-sucking experience does tend to help new practitioners to the noble art of, as the French would say, le skullfuck.
Pete: I skullfucked Rossi so hard last night I fractured his nose and his jaw is now rendered incapable of performing its duties.
Aww Smeh M: Did you skullfuck any rigs last night?
Pvt. Paul Jack Shitcunt Sparta Barta: Oi mate, her face looked like a Jackson Pollock painting after I was through with that hoe.
When somebody is fucked through the eye socket. I wouldn't know what it feels like, but it's probably nice.
John: I skullfucked lisa yesterday.
What morticians do late at night with helpless morgue stock
Not to be confused with Skullcandy
Don't be such a stiff, loosen up a little, I wanna Skullfuck you
To fuck with one's mind/to play mindgames.
Dick skullfucked Jane when he was messing around with someone else and telling her she's the only one for him.
Name of a Greatful Dead double LP (WB 66 009) from 1971 with live recordings of:
Big Railroad Blues
Playing in the Band
The Other One
Me & My Uncle
Big Boss Man
Me & Bobby McGee
Johnny B. Goode
Not Fade Away
Goin' Down the Road Feeling Bad
The word 'Skullfuck' is not visible anywhere on the record but is used by 'Deadheads' when discussing the edition.
To smoke a cigarette/cigarillo until it is down to the filter and then taking one last drag, therefore, fucking your skull.
Jason: Are you finished with that smoke?
Pat: Skullfuck that shit, pussy.