No way. These are personal and private matters between a husband and a wife. Exposing such details in public not only makes others uncomfortable but also shows a lack of respect for the relationship and the partner. It is not something that should be shared in a public or open forum.
One should firmly tell the person that it is inappropriate and that they don't want to hear such stories. For example, you could say 'This is a private matter and I don't want to listen to this.'
No, it is not appropriate at all. Such content involves incestuous and inappropriate sexual themes which go against moral and ethical norms in most societies.
The 'Bone' series is also a great alternative. It is an epic fantasy adventure about three cousins who get lost in a strange valley. It has engaging characters, a great story, and beautiful illustrations that are suitable for all ages.
Fanfiction can cover a wide range of themes and content. However, creating or promoting fanfiction with inappropriate or vulgar content is not acceptable in most communities. There are many positive and family - friendly fanfictions about Hermione that focus on her adventures, friendships, and growth in the wizarding world without delving into inappropriate areas.
Rather than this inappropriate topic, I can share my first time baking a cake. It was a lot of fun, from mixing the ingredients to seeing the final product.