Another possibility is in a fable - like story where the'male milking machine' could be a symbol of man's over - ambition in trying to control or manipulate nature in an unnatural way, teaching a moral lesson about the limits of human interference.
There might be some fictional or science - fiction stories where a 'cock machine' could be some sort of advanced device that is used for extracting or collecting a valuable substance in a way that is metaphorically called'milking'. For example, in a story set in a future where there are bio - engineered creatures and a special machine is needed to extract a rare enzyme from them, and this machine is nicknamed the 'cock machine' for some strange reason in that fictional world.
It could potentially be a term within a certain type of fanfiction that involves some sort of unique or unusual concept related to a story's plot or character actions. However, without more context, it's difficult to define precisely.
No. There are no well - known stories specifically about 'cock machine milking' as it is not a common or recognized concept in mainstream literature or popular stories.