That doesn’t seem clear to me at all. No doubt the meaning of “sex” varies by social context (and perhaps generationally as well). But if, say, a friend asked me, about someone I was dating, “Have you two had sex yet?” and my activity with the person had been limited to blow jobs or other non-intercourse activity, I certainly wouldn’t say “Yes.” “No” seems the truthful answer to me, though it’s ambiguous enough that a clarification is probably called for: “Well, not actual sex, but…” It would simply be false, in the language I use, to say “Yes” and leave it at that.

Which, I was given to understand by some of Clinton’s critics, was the scandalous thing about Clinton: that he would use legalisms to deflect common sense conceptions of the truth.