No. Such content is inappropriate and often violates moral and ethical standards. Fanfic should focus on positive, healthy and family - friendly themes.
I'm not entirely sure what specific'moms eat moms stories' are. It could be some sort of very strange or made - up concept. Maybe it's a fictional or symbolic idea in a very niche piece of literature or an odd local folktale.
One story could be that a young gay man was in a very loving relationship. It was his first time, and he felt a mix of nervousness and excitement. His partner was very gentle and understanding, guiding him through it. It was a very intimate moment that deepened their connection.
Since we don't have the actual story, there's no way to know who these two moms are specifically. They could be any two women who are mothers in the context of the 'raw story' that's being referred to.
No, it is not appropriate in most social and moral contexts. Such a story involves vulgar and inappropriate content that goes against the norms of respectful communication within a relationship and in society at large.
Well, one horror story could be about someone having a really bad reaction due to an allergy during the act, like suddenly breaking out in hives which was really scary for both parties. It made them realize they should have known more about each other's health conditions beforehand.