Fuck is a profane English-language word which often refers to the act of sexual intercourse but is also commonly used as an intensifier or to denote disdain. While its origin is obscure, it is usually considered to be first attested to.
Once upon a time, the English population was decimated by the plague. The King was so concerned about the shrinking number of his subjects.
An English historian believes he has found the oldest known usage of the word fuck.
One origin story for fuck is that it comes from when sex was outlawed unless it was permitted explicitly by the king, so people who were legally.