What's the origin of the slang term "come"?

Search: come origin cum

Why: That word has 2 meanings. 2.

Answer: It comes(!) from literary smut of the 17th century!

This "experience sexual orgasm" slang meaning of come (perhaps originally come off) is attested from 1650, in "Walking In A Meadowe Greene," in a folio of "loose songs" collected by Bishop Percy.

They lay soe close together, they made me much to wonder;
I knew not which was wether, until I saw her under.
Then off he came, and blusht for shame soe soon that he had endit;
Yet still she lies, and to him cryes, "one more and none can mend it."

As a noun meaning "semen or other product of orgasm" it is on record from the 1920s.

Saucy! That reminds me of that scene in the classic 1992 coming-of-age musical romantic dramedy Class Act when Hilary Banks schools Blade Brown about other jizz slang. Relive the magic at 8:35.

Source: EtymOnline

The More You Know: Also:

The sexual cum seems to have no connection with L. cum, the preposition meaning "with, together with," which is occasionally used in English in local names of combined parishes or benifices (e.g. Chorlton-cum-Hardy), in popular Latin phrases (e.g. cum laude), or as a combining word to indicate a dual nature or function (e.g. slumber party-cum-bloodbath).

Cum bloodbath? Ys plz!