No. Harry Potter is a family - friendly franchise aimed at a wide audience including children. Fanfics should also abide by certain moral and ethical standards. Themes like 'cock' and 'cum' are inappropriate and not part of the legitimate fanfic universe for Harry Potter.
No, it's not likely to be popular. The concept of 'harry potter womb fanfiction' is rather strange and not in line with the more common and popular themes in Harry Potter fanfiction like adventures, relationships, or exploring different magical abilities. Most fans are interested in stories that are closer to the original spirit of the books or movies, and this seems like a very niche and perhaps off - putting concept for the general Harry Potter fan community.
I'm not aware of any official 'Harry Potter' fanfic with such a title. 'Harry Potter' fanfics usually have more positive and creative themes that are in line with the general spirit of the original series. Using inappropriate or vulgar terms in fanfic titles is not in line with the good-natured nature of most fan communities.
One good fem Harry Potter Narcissa fanfic could be 'The Hidden Bond'. It explores a different dynamic between a female Harry Potter and Narcissa. In this fic, their relationship starts off as a mystery but gradually unfolds into a complex bond that affects the entire wizarding world around them.
I'm not entirely sure specifically what 'harry potter womb fanfiction' is about as it's not a common or official part of the Harry Potter franchise. It might be some very niche, non - canonical fan - created stories that could involve strange or unorthodox concepts related to the idea of a 'womb' within the Harry Potter universe. However, it could also potentially be something misnamed or not really related to what it seems at first glance.
One common theme is the exploration of gender roles in the wizarding world. Since Harry is female, it often looks at how she is treated differently in a male - dominated society like Hogwarts. Another theme is the alteration of relationships. For example, her friendship with Ron and Hermione might change, or her interactions with male characters could be different.
In some fem Harry Potter fanfics, Narcissa can become more of a protector. For instance, if the story involves a female Harry Potter who is in danger, Narcissa might step up in ways she didn't in the original series. She could be more assertive in using her influence within the Death Eater circles to safeguard Harry.
I'm not entirely sure as it's a rather strange and specific concept. It could potentially be a fan - made fictional story that combines elements of something related to 'cum' (which might be a very inappropriate or misused term here), womb, and zombies in a very out - of - the - ordinary narrative. However, without more context, it's difficult to be more specific.
No. It's a very strange and niche concept that is not likely to be a popular genre. Most people are into more common genres like romance, mystery, or regular horror. This combination of elements seems too outlandish and inappropriate for mainstream popularity.