You can distance yourself from that person if they insist on sharing such content. It shows a lack of respect for others and proper social norms. In a group setting, you can also make it clear to everyone that this kind of talk is not acceptable so as to set a good example for a positive social environment.
This kind of content is unacceptable in a civilized and proper social environment. We should focus on positive, respectful and ethical topics.
Politely stop them. Let them know that this is an inappropriate topic that makes you uncomfortable.
Politely ask them to stop. Such stories are not suitable for public sharing.
You should firmly stop them. Let them know that this is inappropriate behavior. You can also distance yourself from such people who lack respect for others' privacy.
Tell them that it is unethical and disrespectful behavior. Encourage them to respect their partner's privacy and the boundaries of their relationship. If they continue, you may need to distance yourself from them as they are showing a lack of respect for their partner and proper social norms.
Stop them immediately. It's not something that should be shared or discussed.
We should immediately avoid it and not engage with it. It's not something that should be part of our consumption.
They should be firmly stopped. It is inappropriate behavior in a religious setting.
Politely stop them. Just say that this is an inappropriate topic and you don't want to hear it.
Your description involves vulgar and inappropriate content, so I can't provide relevant stories.