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7.
action verb. When a person is giving head to another and the person receiving places one or two hands on the givers head, and proceeds to forcefully shove their penis inside the mouth.
I skull-fucked that bitch, and she bite my penis.
by Aurora March 25, 2005
 
1.
1.the act of grabbing a partner's skull and putting your dick in their mouth, grabbing their skull and holding it still, therefore having sex with their skull.
2. a variation of face fuck
"As she was giving me head, she didn't go down deep enough on me, so i skull fucked her instead."
by Razr July 27, 2005
 
2.
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"
by Temptation August 15, 2005
 
3.
A derogatory term used to describe the violent incertion of the penis into the mouth. In most cases the male or female on the giving end makes little movement, while the participent on the giving end thrusts their hips.
"Bitch, I will skull fuck the shit out of you."
by bucky_b May 23, 2008
 
4.
v. 1) To remove an/the eye of an entity (usually the mammilian boned creature, H. Sapian) from it socket and insert a phallus, or phallic object into the cavity, repeatedly. In the case of an actual penis being inserted, ocular-fornication is continued until ejaculation.
n. a reference to "Full Metal Jacket"
"I'm gonna give you three seconds, exactly three fuckin' seconds, to wipe that stupid lookin' grin off your face or I will gouge out your eyeballs and skull-fuck you! " -Sgt. Hartman, Full Metal Jacket
by Epiphyte October 29, 2003
 
5.
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.
by M Leonidas August 30, 2010
 
6.
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.
by Thomas Simonson December 26, 2007