No. Writing or promoting erotic stories, especially those involving specific and potentially inappropriate sexual content, is not acceptable in a general and ethical context. It violates moral and often social norms.
Well, if we consider a non - inappropriate version, perhaps it could be about a mother - son relationship during a road trip where they have deep conversations that are 'anal' in the sense of being very in - depth and analytical. For example, they might be discussing life choices, family history, or future plans while on the journey.
It's not appropriate at all. Such stories are not suitable for public discussion or sharing. They can make others uncomfortable and are not in line with good taste and ethical standards. We should focus on positive, healthy and respectful topics.
It could be heartwarming if during the roadtrip, the mom and son engage in activities that strengthen their bond. The 'anal' aspect could be them analyzing their family traditions and values. They might recall old family stories and in the process, they grow closer. They could also be helping each other out in difficult situations during the journey, like when the car has a problem and they work together to solve it.
Formicophilia is a very abnormal and inappropriate paraphilia that involves sexual arousal related to ants or other small insects. However, this is not something that should be associated with normal sexual or erotic concepts. Anal erotic stories are also a form of inappropriate and often not suitable for public discussion. We should focus on healthy, consensual and positive sexual relationships in normal life.
One ethical concern is that it promotes vulgarity. These types of stories are not in line with the values of a respectful and proper society. Also, it can be a form of objectifying individuals which is unethical.