Exercise is crucial. He could start with some simple physical activities like walking or jogging. This would stimulate his bowel movements. In the fanfic, perhaps he joins a sports club or is motivated by someone to be more active.
Stress might also be a factor. Maybe there are some events in the fanfic like exams or arguments that make the boy stressed. Stress can affect the digestive tract and lead to constipation. Just like in real life, when people are worried, their body functions can be disrupted.
First, the adults around him need to have a serious conversation with him. They should explain why spanking is not a positive or healthy form of interaction. For example, they can say that there are better ways to get attention or show remorse. Second, they should try to find out the root cause of his behavior. If it's because he feels ignored, then they can start giving him more positive attention, like spending more time with him doing fun activities.
There should be an open dialogue between the families involved. The girls should be made to understand the seriousness of their actions and should be made to apologize sincerely. And if there are any legal implications, they should be dealt with according to the law.
Apology and redemption. The character who has done wrong can sincerely apologize. For example, if a character has betrayed Naruto, they can come forward, admit their mistake, and show that they are truly sorry. Then, they can start to make amends, like helping Naruto in his future battles or protecting Konoha.
Well, communication is key. If his friends sit him down and have an honest conversation with him about his behavior, he might realize how he's been acting. They can share their concerns and let him know how his snapping is affecting them.
Alexis could also try to engage in discussions with other fans of Beckett. By sharing her/his views, Alexis might gain new perspectives and either change her/his mind about fanfic in general or at least find a subset of fanfic that she/he can tolerate.
One way to resolve it could be through communication. The official Percy Jackson creators could engage with the fanfic community, listen to their concerns, and come to an understanding about how to respect each other's work.
One way could be for the writer of the fanfic to rewrite Brick's character to be more palatable to Blossom. Maybe make him more heroic or less antagonistic.
She could also have a conversation with the girls, explaining that her behavior was wrong and that spanking is not a good way to discipline. By doing this, she can correct any wrong impressions the girls may have gotten.
If the boy is shy about a physical examination, the nurse can explain the process in a very gentle and reassuring way. For example, she can say that it's a normal part of medical care and she has seen many similar cases. This will make the boy feel more at ease and gradually reduce the embarrassment.