The word “fuck” is not actually an acronym, despite popular myths like “For Unlawful Carnal Knowledge” or “Fornication Under Consent of the King,” which are “backronyms” created much later to explain the word’s origin. Linguistically, “fuck” evolved from older Germanic words (like Dutch fokken or German ficken) meaning to strike, thrust, or breed, with its first known English uses appearing in the 15th century, long before these false acronyms emerged.
I always thought it was a shortening of the word “Fecundity”.
I never use the term as to me it shows people who use it were raised as gutter trash.