In one of W.C. Fields’ movies (paraphrasing):
W.C. to woman: Would you have sex with me for a million dollars?
Woman: Yes
W.C. to woman: Would you have sex with me for fifty dollars?
Woman: What kind of woman do you think I am?
W.C. to woman: We’ve already established that. Now we’re just negotiating price.
The movie censors of that era would never have permitted the word "sex" to be uttered in an American film.