Another language note.
Dan Savage, who writes the 'Savage Love' column for a Seattle newspaper (it is, or was, also carried in HK magazine) strongly disapproves of 'cum', not the word, the spelling.
He writes:
Of all the words given a second, sexual meaning through slang usage, why does this one require an alternate spelling? We don't "suk dik," eat "pussee," sit on "kocks," get "blohjahbs," or nuzzle "juggs," do we? "Cum" is an adolescent, Hustler magazine affectation that I simply cannot endorse.
And the fact that the word is both noun and verb further complicates the matter. As a noun, it's always cum: "Look, there's some cum lying there." "Oh, I have cum in my eye." Not so when used as a verb: "Come on me, baby." "He came on me."
And what if you need to use both the noun and verb forms in one sentence? Writing "He came in my mouth, so I swallowed his cum" is stylistically inconsistent, don't you think? Looks sloppy. How much simpler it is to use the standard four-letter spelling and allow the word to have, as so many words do, more than one meaning.