Definitely not. Most fanfic is centered around popular movies, books, or TV shows, and is more about exploring different storylines within those established worlds. 'Normandy sex fanfic' seems like a very specific and rather inappropriate combination that is not likely to be common. It doesn't fit into the typical categories of fanfic that are widely known and read.
Hardly. Fanfic communities tend to revolve around well - known fictional properties. A 'normandy sex fanfic' doesn't seem to be based on any of the typical fanfic foundations. It's an out - of - the - ordinary and potentially improper concept that would not be considered common. In fact, it may even be frowned upon in the fanfic community due to its nature.