Definitely not. Mainstream literature values things like human relationships, social issues, and cultural exploration. Content like 'cock and ball stories' is not in line with the values and aesthetics of mainstream literature. It is vulgar and unacceptable in the context of general literary works.
Well, a femdom cock milking story typically belongs to the world of adult and fetish - related content. It's not something that can be openly and widely discussed in a general or family - friendly context. Since it involves sexual and BDSM elements with a female - dominant scenario and a specific sexual act.