How can we avoid hearing bathhouse sex stories?

Avoid being in the company of people who tend to share such inappropriate stories.

Well, first of all, we should respect boundaries. Don't engage in gossipy conversations that might lead to such topics. Also, if someone starts to tell such a story, simply walk away or change the topic.

You can avoid it by being assertive. If your roommate starts to share something inappropriate like a sex story, politely but firmly tell them that you don't want to hear it. Another way is to engage in activities or conversations that are more positive and general, like talking about hobbies or current events.

Avoid being in inappropriate social circles where such topics might be discussed. Also, if someone starts to tell such a story, firmly ask them to stop.

Avoid parties where there is excessive drinking and rowdy behavior. If you sense that a conversation is turning in that direction, politely excuse yourself.

Just don't be part of any inappropriate conversations. If someone starts to go in that direction, politely change the topic.

Just make it clear to your friends that you are not interested in such topics. Set your boundaries firmly.

Avoid hanging out with people who are likely to share such inappropriate stories. If you find the conversation going in that direction, change the topic.

Avoid hanging out with people who are likely to tell such stories. If you notice someone has a tendency to talk about inappropriate sexual topics, limit your interaction with them.

You can simply make it clear from the start that you're not interested in such topics. If someone starts to go there, change the subject or walk away.