One interpretation could be that it's a form of discipline for his actions in the wizarding world. For example, if we consider his actions towards Harry Potter and other students, some fanfiction writers might use this as a way to show him facing consequences. Another interpretation could be a more comical or satirical take on his serious and often intimidating character, like a way to break down his stern facade.
There might be some out there in the vast world of fanfiction, but it's not a common or well - known type. Most Harry Potter fanfiction tends to focus on more positive relationships, like Harry's friendships, his adventures against Voldemort, or exploring the backstories of other characters. This kind of scenario you mentioned is rather unorthodox and might not be as popular or easily found.
This kind of fanfiction is not appropriate. Fanfiction should promote positive values and healthy relationships. A scenario where a baby is spanked involves themes of violence towards a child, which is unacceptable in modern moral and ethical standards.
There might be some out there. Some fanfictions focus on the complex relationship between Harry and Snape. They may use the idea of Snape disciplining Harry in this way as a means to explore their power dynamic and the strictness of the Hogwarts environment without being inappropriate. It could be part of a story that aims to show Snape's role as a strict teacher and Harry's growth in dealing with authority.
Fanfiction involving such themes can be inappropriate and against the positive spirit of the original 'Harry Potter' series. J.K. Rowling's work focuses on themes like friendship, courage, and magic, not this kind of inappropriate situation. So, I would not recommend seeking such fanfiction.
Well, one possible plot could be that Death Eaters who suspect Snape of being a double agent kidnap him. They might take him to a secret lair and try to torture him for information. Snape, being as tough as he is, would hold his secrets as long as possible. Maybe Harry and his friends find out and embark on a rescue mission, having to face their former enemies to save Snape.
The Death Eaters are a likely choice. Since Snape was a double agent, some of them might have suspected his true loyalties all along. Once they got the chance, they would kidnap him to either punish him or to get information out of him about the Order of the Phoenix.
It's inappropriate because it involves a rather violent and unethical scenario within the context of the 'Harry Potter' characters. Hermione is a strong, intelligent character, and Snape is a complex teacher figure. This kind of relationship in the form of such an act is not in line with the original characterizations and the overall positive and magical atmosphere of the series.
Well, it's not that common, but it does pop up. I think it may exist because in the Harry Potter world, Snape has this brooding and often unlikable exterior. Writers may use the idea of him getting spanked as a way to kind of 'put him in his place' in a very extreme and fictional sense. It could also be a way to show his relationship with authority figures in a more extreme and unique way.