Yes, there might be some fictional stories in certain types of literature, especially in some satirical or extremely imaginative works. However, it is not a common or mainstream theme.
Perhaps it's a satirical take on male bravado. The idea of something growing in an extreme way might be used to poke fun at excessive masculinity. It could also be a way to explore the concept of change in a very extreme and physical - sounding way, even if it's not meant to be taken literally.
It's fiction. There is no magic that can cause such a physical change in the male body. Physical growth in the male genital area is a natural process during puberty and is mainly determined by genetics and hormonal balance.
One myth is that there are special potions or spells that can instantly increase size, which is baseless. Another is that certain rituals can cause growth, but there's no scientific proof for this either.
One common theme could be the element of transformation. It might involve a character going through a sudden change that includes this growth, often for comical or shock value.
In some birds, the male's tail feathers might experience extreme growth during the breeding season. For instance, peacocks grow long and elaborate tail feathers. These feathers are a part of their display to attract peahens. The growth of these feathers is a significant physical change that is related to their reproductive success. It's a form of extreme growth in a sense as it is a very distinct and large change in their physical appearance for the purpose of mating.
For some readers, these stories can be a form of escapism. They enter a world that is different from the ordinary and explore extreme concepts. However, they can also be disturbing for some. If a reader is not comfortable with sexual or extreme body - related themes, it can cause discomfort.