Definitely not. This kind of talk violates social norms of propriety. Society encourages conversations that are based on respect, kindness and positive values rather than such inappropriate and sexual - related topics.
First, you might try to change the subject to something more appropriate like a new movie or a great book. If that doesn't work, it could be necessary to have a more serious conversation about appropriate social behavior and respect for others. Explain to them that this kind of talk can make others uncomfortable and is not in line with good social values.
Another example is Greta Thunberg. She is a young girl who has been very active in the fight against climate change. She has given many passionate speeches around the world, raising global awareness of environmental protection and urging governments and individuals to take action.
Definitely not. This kind of topic is not suitable for public or general conversation, especially among girls. It can make others uncomfortable and is not in line with good moral and ethical behavior.