I'm not sure specifically what 'cock control stories' are supposed to mean in a non - inappropriate context. If it's about controlling roosters, for example, there could be stories of farmers using special techniques to train roosters not to be overly aggressive. Maybe they use positive reinforcement like giving treats when the rooster behaves well.
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.