Free text to fuck
The line that contains fuck reads Non sunt in coeli, quia gxddbov xxkxzt pg ifmk.
Deciphering the phrase "gxddbou xxkxzt pg ifmk", here by replacing each letter by the previous letter in alphabetical order, as the English alphabet was then, yields the macaronic non sunt in coeli, quia fuccant vvivys of heli, which translated means, "They are not in heaven, because they fuck the women of Ely".
One reason that the word fuck is so hard to trace etymologically is that it was used far more extensively in common speech than in easily traceable written forms.
However, the connection to futuere has been disputed—Anatoly Liberman calls it a "coincidence" and writes that it is not likely to have been borrowed from the Low German precursors to fuck.
Since uncontaminated resources were scarce, supposedly many towns required permission to have children.
Hence, the legend goes, that couples that were having children were required to first obtain royal permission (usually from a local magistrate or lord) and then place a sign somewhere visible from the road in their home that said "Fornicating Under Consent of King," which was later shortened to "FUCK." This story is hard to document, but has persisted in oral and literary traditions for many years; however, it has been demonstrated to be an urban legend.
However, there is no clear past lineage or derivation for the Latin word.
These roots, even if cognates, are not the original Indo-European word for to copulate, but Wayland Young argues that they derive from the Indo-European *bug– ("be", "become"), or as causative "create" [see Young, 1964].