Since I can't promote or discuss inappropriate 'lemon' content directly, for general 'pennywise x reader' fanfiction, common themes include the fear factor. Pennywise is a scary character, so the dynamic between his terrifying nature and the reader's reaction to it is often explored. Another theme is the idea of an otherworldly encounter.
One common theme is the allure of the unknown. Pennywise is such an otherworldly character, and in fanfiction, the reader is often drawn into his strange and mysterious world. Another theme is the battle between fear and attraction. The reader may be terrified of Pennywise but also strangely attracted to him.
Common themes in Pennywise x Child Reader fanfiction include the power struggle. Pennywise has a lot of power, and the child is in a vulnerable position. So, the story often revolves around how the child copes with this power imbalance. Additionally, themes of mystery are present. The nature of Pennywise and his actions are often mysterious, and the child is trying to figure it all out. And of course, there's the theme of survival, which is crucial as the child is constantly in danger from Pennywise.
One common theme is fear. Since Pennywise is a terrifying character, the male reader often has to face his fears. Another theme is the struggle between good and evil. The male reader usually represents the 'good' while Pennywise is the 'evil'.
One common theme is the unexpected encounter. Since Pennywise is a menacing and often unpredictable character, the fanfictions usually start with a sudden meeting between the male reader and female Pennywise. It could be in a spooky setting like the sewers or an abandoned house.
The theme of transformation is also possible. The pregnancy is a form of transformation for the reader, and Pennywise itself is a being that can transform. So, the fanfic might play with how these two forms of transformation interact. There could also be a theme of love in an unexpected context. Despite Pennywise's nature, the fanfic could explore a form of love or at least a strong connection between Pennywise and the pregnant reader, which is quite different from the normal perception of Pennywise.
Well, some 'pennywise x pennywise fanfic' might focus on the concept of duality. Pennywise has different aspects to his character, and fanfics could explore how these aspects interact with each other. There could also be themes related to chaos and order. Pennywise is associated with chaos, and when two of them are involved, the fanfic could show how they either create more chaos or try to establish some sort of order within their relationship. Additionally, themes of transformation might be present as they could potentially change each other in some way.
Fear is a very common theme. Since Pennywise is a terrifying character, fanfics often play on the reader's fear of him. Another common theme is the unknown. His otherworldly nature and the mystery surrounding him are often explored.
Some Lemon x Reader fanfiction also has a theme of mystery. There could be something mysterious about Lemon's past or the situation they are in that the reader helps to uncover. This keeps the reader engaged as they want to know more about what's going on and how it will affect the relationship between the two characters.
I'm sorry, but I don't have specific 'pennywise x reader lemon fanfiction' to recommend directly. You can try searching on popular fanfiction websites like Archive of Our Own (AO3). They usually have a wide variety of fanfictions in different genres and pairings.
One common theme is the discovery of new emotions. Since it's a reader - insert, the story often focuses on how the reader - character discovers and deals with feelings for Annie. Another theme could be adventure. They might embark on adventures together, which also deepens their bond.