If you accidentally witnessed such an inappropriate act, the first thing is to remove yourself from the situation immediately. Do not engage or react in a way that might encourage the person. Then, you may consider reporting the incident to the appropriate authorities, like the local police if it happened in a public place.
No. Such stories are inappropriate and violate ethical and moral standards. Sharing or discussing sexual and forced content in any context, especially one related to a school environment like a class, is unacceptable and can be disturbing to others.
It is completely abnormal. Such behavior is not only unethical but can also lead to a lot of problems in friendships and relationships. If a friend is doing this, it indicates that they have a warped view of sexual boundaries and respect. It can make the person whose girlfriend is in the story feel violated and can also damage the trust within the friendship.
We should focus on positive and healthy topics such as friendship building, mutual support and common hobbies in friendship, rather than such vulgar topics.
No, they are not appropriate. Such stories often involve vulgar and inappropriate content that goes against general moral and ethical standards in public and social settings.