Definition & Meaning of "skullfucker"in English

What is the origin of the term "skullfucker" and how is it used?

"Skullfucker" is a highly vulgar slang term used to describe a person who is sexually perverse, aggressive, or obscene. It likely emerged in late 20th-century English as an extreme compound insult, combining "skull" (emphasizing violence, force, or intensity) with "fucker" (a crude term for sexual activity or aggression) to create a shocking, derogatory label. The term is used in informal, hostile, or darkly humorous contexts, often online or in subcultural speech, and is intended to provoke disgust or convey moral outrage. It is strongly offensive and never neutral.