It is about committed love between members of the different classes (see biography, Beckett 75). Lawrence knew that it would be difficult to find a publisher for his novel, especially in England, where he had already had run-ins with obscenity law.
It is about the sensuality of sex as something that cannot be cerebrated upon: we might even say that it is a biography of Lady Chatterley's sex life as the central aspect of her life in general. He found a small publisher in Florence, and Giuseppe Orioli printed the third version in 1928.
And whatever you do, don’t make her self-conscious about it.
So after a few times of this, apparently he’s had enough and retorts with the above line.
Boys, the rule is never to talk about the woman’s orgasm right after she’s had it, much less criticize how she gets herself there (especially if you’re a Señor Speedy! Be thankful that she can come with you, by hook or by crook!
There’s enough sex in Lawrence’s scandalous masterwork that I could find ten—yes, ten—things said after sex that you really wouldn’t want to say today.
Some are said by men, some are said by women, but both sexes should avoid pretty much all of them.