[NSFW -- Warning! TOQ!] The answer is one word: "S*x." What is the question?

This is a Totally Obscene Question (TOQ). In case anyone thinks S*x means Six or Sox or Sux or Sax—it doesn’t. Much thanks to the person who flagged the question and my apologies for endangering the jobs of millions of innocent jellies. I don’t know what I was thinking.

The totally obscene unexpurgated version of the question is:

“The answer is one word: “Sex.” What is the question?”

Try not to duplicate anyone else’s question.