One possible theme could be discipline. In the fanfiction, Snape might see Harry as needing strict guidance and uses the whipping as an extreme form of discipline, perhaps to teach Harry a lesson about the dangerous world of magic he's in. Another theme could be power dynamics. Snape has a certain amount of power as a teacher, and the act of whipping Harry could be a way to show how that power can be misused or used for what Snape believes is Harry's own good.
Well, a theme could be redemption. Maybe Snape has some dark past or wrongdoings that he is trying to make up for by being overly strict with Harry, including the whipping which is a very extreme measure. It could also be about survival. In a darker, more dangerous version of the wizarding world in the fanfic, Snape might think that by whipping Harry, he's toughening him up for the battles and challenges that lie ahead. And then there's the theme of mentorship gone wrong. Snape might have good intentions of mentoring Harry but his methods, like whipping, are completely wrong.
Yes, there might be some out there. While the idea of Snape whipping Harry sounds quite harsh in the context of the original story, some fanfictions might explore this in a non - violent, more metaphorical or alternate - universe way that doesn't involve inappropriate content. You can search on fanfiction platforms with appropriate filters to find such stories.
One possible theme could be about breaking boundaries. In the context of the normal relationship between Harry and Snape in the original series, this fanfiction concept might be about going beyond the expected and exploring a relationship that defies the norms. Another theme could be about power dynamics, with Harry perhaps being in a submissive role in relation to Snape, which is a complete reversal of their normal dynamic in the books.
A theme could be redemption. Perhaps Snape has done something so unforgivable in the eyes of Harry that it makes Harry think Snape sucks. And the story could be about Snape trying to redeem himself in Harry's eyes. Or it could be about jealousy. Snape may be jealous of Harry's fame and Harry may sense this and thus dislike Snape.
One possible consequence could be that she gets fired from her position. If Harry manages to expose her actions, the wizarding school or the Ministry of Magic might not tolerate such blatant abuse of power and take disciplinary action against her.
One possible theme could be the contrast between the innocence of the Teletubbies and the often dark and brooding nature of Snape. It could be about how Snape reacts to the simple and happy world of the Teletubbies.
One possible reason could be Snape's long - standing grudge against James Potter, Harry's father. Since Snape had a difficult past with James, he might project that onto Harry. Another reason could be that Snape is trying to protect Harry in a very strange way. He may think that by rejecting Harry, he is keeping him at a distance from the dangerous wizarding world politics and plots that Snape is often involved in.
One possible motive could be that Snape is still deeply influenced by his loyalty to Voldemort in this fanfiction. Maybe Voldemort has some hold over him that forces him to do the unthinkable. Another reason could be a misunderstanding. Snape might believe that Harry has turned to the dark side or is about to, and he decides to take preemptive action to stop what he thinks will be a great evil.
A possible theme could be forgiveness. Harry might be in a position where he has to forgive Snape for all his past misdeeds. And this rather strange act of Snape bouncing him on his lap could be a catalyst for that forgiveness. Additionally, it could also touch on the theme of growth and change, both for Snape, who is showing a different side of himself, and for Harry, who has to adapt to this new side of Snape.
Another theme might be the relationship between teacher and student. Snape and Harry have a complex relationship throughout the original series. This fanfiction could use this scenario to further explore their dynamic. For example, Snape might see spanking Harry as a way to protect him in the long run, by teaching him important lessons about following rules and being responsible in the dangerous magical world.
Perhaps in some 'harry marries snape fanfiction', there could be a magical accident that binds their fates together. At first, they resist the connection, but as they get to know each other better, they find common ground and fall in love, leading to marriage. This could involve a lot of emotional turmoil and self - discovery for both characters.