No, it is completely inappropriate. Such topics are private and inappropriate to share with a parent, especially a mother. It violates social and family norms of propriety.
I'm still not clear on what a'mom suck friend story' is supposed to be. But if we assume it's about a positive relationship between a mother and a friend, it could be a story where a mother befriends her child's friend's mother and they support each other, like sharing parenting tips and having playdates for the kids together.
There are no legitimate origins for such awful and immoral stories. They are likely the product of sick and perverted minds who want to create shock value or spread harmful and inappropriate content.
Well, in the realm of mainstream literature, these are not acceptable. However, in some underground or unregulated forms of writing, they might exist, but that doesn't make them right. We should promote literature that is inclusive of all ages and respects different values, and these stories clearly don't meet those criteria.