A term originated around 1994 in the alt.tasteless newsgroup as a response to the question "What is the sound of a good skull fucking?" The term was quickly picked up by the alt.fuck.the.skull.of.jesus group and used primarily within Subgenius circles as a verb meaning "To fuck someone in the skull." The term was co-opted by the BDSM community some time latter, and its original meaning is often overlooked or ignored.
It's not often that I get to squick, but since I've become a mortician it is much easier.
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