No. Such content is completely unacceptable in literature as it involves immoral and inappropriate themes, especially when it comes to the improper relationship between an old man and a teen.
No. 'Creampies' is a vulgar and inappropriate term, and such content is not suitable for fanfiction. Fanfiction should focus on positive, creative and respectful interpretations of the original work.
No, because the term 'creampies' is not suitable for family - friendly stories. However, we can talk about the joy of sharing a slice of fresh cream pie during holidays with family and friends. It's a simple pleasure that brings people together.
Another way could be to think of it as a mystery story set in the back seat. For instance, a detective discovers a clue in the back seat of a suspect's car which leads to solving a big case.