How should one react if a pregnant wife starts sharing vacation sex stories?

Politely but firmly ask her to stop. For example, you could say 'This is not the right time or place for such stories.'

One should firmly and clearly express that such talk is unacceptable. Set boundaries and communicate the importance of loyalty in the relationship.

Just listen attentively. Nod and show that you're interested in what she's saying.

Tell them firmly that they should not be sharing such personal and inappropriate information. If possible, remove the person from the situation where they might continue to spread such stories. Also, it might be a good idea to inform the wife about what has been happening so she can take appropriate action if she wishes.

A good friend should firmly but politely stop the conversation. For example, say 'This topic makes me uncomfortable. Let's talk about something else.'

Tell her that it makes you uncomfortable and that it might also make others uncomfortable. Suggest finding other topics to talk about that are more appropriate for public or general conversation. You might say, 'I love you, but sharing sex stories is not something I'm okay with. Let's talk about our travels or hobbies instead.'

You should firmly stop them. Let them know that it's inappropriate and disrespectful to share such private information.

If you're comfortable with it, you can listen with an open mind and maybe even share your own thoughts. But if it makes you uncomfortable, calmly tell her how you feel.

Well, it's important to handle it delicately. Firstly, don't use it as ammunition to start an argument. Instead, see it as an opportunity to understand her deeper feelings or desires perhaps. But also, since she was drunk, it might be wise to take it with a grain of salt and approach the topic again when she's fully in control of her faculties to get a more accurate understanding.

Well, it's not okay in most cases. Pregnancy is a special time, and sexual matters are very personal. Sharing these kinds of stories can be seen as disrespectful to the privacy of the relationship. It may also make family members or friends feel awkward or embarrassed.