There are a few. However, they are usually part of very old or extremely complex literary works. These stories are not common in mainstream literature as such themes are considered unethical. In some classic European literature, there might be some allusions to improper family relationships which could be related to this, but they are more about exploring moral and psychological boundaries.
In proper literature and mythology, such themes are extremely rare and not in the form of what is wrongly implied. Most stories in literature and mythology uphold moral and ethical values. For example, in Greek mythology, family relationships are complex but not in this inappropriate way. There are more stories about heroic deeds, love between proper couples, and the struggle between good and evil.
In modern society, such stories are generally met with strong disapproval. We have a much stronger sense of ethical and moral boundaries today. Any form of incestuous or inappropriate family relationship themes are considered unacceptable and go against our values of healthy family and social relationships.
This is not at all appropriate. It violates basic human values and the healthy development of family relationships. We should focus on positive and healthy family interactions instead.
There are no appropriate stories of this nature in mainstream literature. Incestuous themes are not acceptable in moral and ethical literature. Most works uphold positive values like family love in a proper and non - inappropriate way.
Well, sometimes in modern media, a wrong emphasis on certain family interactions might be misinterpreted. For instance, if a son is shown being very affectionate towards his mother in a movie, and some viewers with a dirty mind could wrongly think there is something more to it. Also, in some fictional works where the plot is convoluted and family relationships are explored in a very deep and complex way, people might misinterpret the normal mother - son relationship as something improper like this 'son seducing mom' idea, which is completely wrong.
Educating the public about appropriate family values and ethical boundaries can also help. When people are aware of what is right and wrong, they are less likely to spread or be interested in such inappropriate stories.
It's not acceptable because it betrays the trust within a friendship. A friend is someone you should respect and protect, and going after their mom is a huge violation of that bond.
This is a very wrong and abnormal idea. We should promote positive, healthy and ethical family and social relationships, and stay away from any form of immoral and unethical content.