I don't think there should be. 'Spongebob' and 'Sandy' are characters from a cartoon mainly aimed at kids. Having a 'pregnant' fanfic about them is really not in line with the nature of the show. It's important to respect the intended audience and the general tone of the original creation.
Creating such a fanfic is a bad idea for multiple reasons. 'Spongebob' and 'Sandy' are iconic characters from a show that is known for its simplicity and humor aimed at kids. A 'pregnant' fanfic would not only be out of place in terms of the show's genre but also might lead to a wrong kind of fan following. It could also cause controversy and negative reactions from parents and fans who want to preserve the innocent nature of the 'Spongebob' universe.
In a Spongebob and Sandy fanfic, the main focus is on Spongebob and Sandy. Spongebob, with his iconic laugh and his simple - minded yet endearing nature, is a key figure. Sandy, with her acorn - based lifestyle and her friendship with Spongebob, is equally important. Their friendship is what often forms the basis of the story, whether it's them sharing their different cultures (underwater vs land) or working together to solve a problem that affects both of them or their friends in Bikini Bottom.
Well, one possible plot could be that Sandy discovers she's pregnant and Spongebob tries to be the best friend ever by helping her gather all the nuts she craves, since she's a squirrel. He could go on all sorts of adventures in Bikini Bottom to find the rarest nuts for her.
Sandy might develop more of a nurturing side. As she's pregnant, she could become more protective and careful. For example, she might avoid her usual extreme sports activities in Bikini Bottom. Spongebob, on the other hand, could develop more responsibility. He might take on tasks like getting food for Sandy regularly and making sure she has a safe place to rest.
Adventure is also often seen. Since Spongebob is always up for an adventure and Sandy is quite brave and intelligent, they make a great team for exploring new places in Bikini Bottom or even beyond. For example, they might discover a hidden underwater cave or an ancient artifact. This makes for exciting stories.
Another idea is a story where Sandy wants to introduce some of her land - based inventions to the underwater world. Spongebob helps her with the process, but things go hilariously wrong at first. For example, a machine that is supposed to make the water around Bikini Bottom cleaner ends up making it all muddy. They then have to work together to fix it and learn a valuable lesson about testing things properly before using them in a new environment.
One thing that makes 'Spongebob and Sandy Lemon fanfic' unique is the blend of their different personalities. Spongebob is all bouncy and naive while Sandy is more scientific and tough. Fanfic writers can play with these traits, creating stories where they have to rely on each other's strengths. For example, in a fanfic, Sandy's scientific knowledge and Spongebob's optimism could combine to save Bikini Bottom from some new threat. It also allows for a different take on the underwater world of Spongebob, adding new elements like the 'lemon' aspect which might be a creative addition to the story.
The popularity of 'Spongebob x Sandy fanfic' lies in the unique dynamic between the two characters. They are from very different worlds, with Spongebob being an underwater sea creature and Sandy being a land - dwelling squirrel in an underwater dome. This contrast creates interesting story possibilities.
Obviously, the main characters would be Spongebob and Sandy. Spongebob, the ever - enthusiastic and naive sponge who lives in a pineapple under the sea. And Sandy, the smart and tough squirrel from Texas who lives in an air - filled tree dome.