No, it is not appropriate. Such stories often involve vulgar and inappropriate content that goes against moral and ethical standards in most societies.
Yes, there are. Erotic stories involving such specific and potentially invasive or inappropriate topics often raise ethical concerns. They may objectify the body in an improper way and violate the boundaries of privacy and respect for the human body. Moreover, they may not be suitable for public consumption or go against moral and social norms in many cultures.
Medical textbooks are a great source. For example, books on gastroenterology or general medicine often cover the topic of enemas from a medical perspective, explaining how they are used for medical treatment, diagnosis, or preparation for certain procedures. Also, consulting a medical professional directly can give you the most accurate and personalized information.
Once, my friend's little dog had to have an enema. The vet was so gentle and the dog's reaction was priceless. It looked so confused as if asking 'What on earth is happening?'. After it was all done, the dog zoomed around the room like it had a new burst of energy. It was really funny.
No, it is not ethical. Enema punishment involves a form of physical intrusion and potential harm that is not acceptable in a healthy, consensual relationship. In any relationship, both partners should respect each other's physical and mental well - being and abide by ethical and legal boundaries.
I'm not sure specifically which 'slave boy enema story' you are referring to. There could be many fictional or historical accounts with such a title. Without more context, it's difficult to say exactly what it's about.