The illegal act of drilling a hole into someone's head and then proceeding to flop your love muscle in and out of the cranial hole. It is considered taboo in most cultures but is still legal in Australia, North and South Korea, and Iran. Was widely experimented with back in the 50's but was nixed due to the likely chance of the fornicator injuring or scratching his cum gun. The famous musician Moby is a very large advocator for it and is a key member in the movement to legalize skull fucking, claiming he has devised a way to safely carve a fuck hole out of a head( male or female we all know he likes to bat with both hands) that is instantly smoothed out providing his "Beef Whistle" safe entry into the mushy abyss of the brain.

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

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.

The act of forcibly, gouging out someone's eye balls, preferably with a plastic spoon, then forcing your dick deep into the vacant eye socket allowing for ample cum to coat the brain.

to use the intestines of defeated foe as you fornicate with their skull in the eye socket

Used to emphasize the extent to which one individual owns another, typically in a fight. Often times, the skull fuckee will have had their head cracked open while the skull fucker will proceed to make use of the newly created orifice.

Something one does to Carmen.