Even though Dan wanted a normal sized cock on himself Kim liked the idea of it seeking her out wherever she was.
When he was soft it would reel in and be quite small in comparison to other men. Some might say micro cock. But when he got excited it would seek out Kim and pleasure her.
There were only two things that got him excited at this point though. When Kim wanted him her desire got him excited. It was Kim's desires not his that were in control of his penis for much of the time.
The other time that he had some control over his penis was when he was with a gay man. The bad thing about this was that he still had no control over the length of his cock. He could be pleasuring a man and the lack of sensitivity would cause his penis to continue to grow and grow until he came deep inside the man. Just like a dog his large cock would tie him to his trick. There were some times where his cock was so expanded that it looked like he had a huge beer belly. This was more noticeable on men that had been skinny when he started. The bigger beefier men, would round out quite a bit but having already been roundish they didn't show much. And just like a dog it took a long time for Dan to be released from the man.
Kim also had the same problem if she were close to Dan. She would be filled by his ever expanding cock and she looked very pregnant with his cock lodged inside her. It was much more comfortable for her when he was at a distance from her but neither she nor Dan's male tricks complained about being filled by his cock.