It is not the question that is wrong. It is the timing. The kinds of things we talk about vary according to our level of intimacy with the person to whom we are talking. For example, it is perfectly fine to tell a close friend, "I have a really bad case of hemorrhoids." But if you turn and say the same thing to the random chap you sit next to on the subway, it is at least awkward and maybe weird. The question asked would be a lot different if asked in an established relationship than on a first date. Its happening on a first date would make me watch out for other examples that might demonstrate if this person has a problem with boundaries, and if I can live with what I observe. Is this the only awkward conversation or the first of many, and if its a habit, am I on board for being a part of that?