A different false etymology, first made popular on the radio show Car Talk, states that the phrase "fuck you" comes from the phrase "pluck yew" and relates the origins of fuck to the myth surrounding the V sign.This myth states that French archers at the Battle of Agincourt insulted the English troops' ability to shoot their weapons by waving their fingers in a V shape; after the English secured a landslide victory, they returned the gesture.
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".
it is uncertain to what extent the word fuck was considered acceptable at the time.
The stem of fuccant is an English word used as Latin: English medieval Latin has many examples of writers using English words when they did not know the Latin word: "workmannus" is an example.
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].