Jon looked at the dark-haired woman, desperation in his eyes. "Can you fix this?" he pleaded.
The woman's mouth tightened into a thin line. "That depends," she said, uncertainly. "If you transferred your masculinity to another biological male, we should be able to restore it. If you transferred it to a female, it's a totally different game."
Jon felt a sinking feeling in his stomach. "How would I have transferred it?" he asked, dreading that he already knew the answer.
The woman explained. "The process we use is based on Tantric magic. Essentially, we take the masculine energy that your body already produces, and we magnify it in you. After a couple of weeks of treatments, we can stabilize it so you don't lose much of the accumulated body changes; otherwise, it would just slowly drain away. However, when you're still undergoing treatment, it's unstable, and trying to escape. That's why you aren't supposed to ejaculate. If you just ejaculated onto an inanimate object, you would simply lose the progress you've made - but if you do it on another person, you set up a conduit and your masculine energy flows into that person."
Jos gasped. "Would that turn a woman into... a man??" he asked.
"No," replied the woman, "not by itself. She would still have all of her feminine energy, so she would gain some concentrated masculine attributes, but not lose any of her femininity."
"But the process was giving me a bigger..." Jon gestured at his hairless micropenis, not sure what to say.
"Yes," said the woman, "but masculine and feminine energy has different effects on different people. What happens is mostly based on your own deeply-held beliefs about masculinity and femininity."
"What do you mean?" asked Jon.
"Well, it means that the changes that happen are what you think they should be. It's not something you can guide consciously; whatever you believe to be masculine or feminine, deep down in your soul, is what happens. You happen to believe that defined muscles and a large penis are 'masculine'. If you believed, for example, that masculinity was all about fertility, you might keep a normal-sized penis but become extraordinarily virile, able to impregnate women with ease."
"So what happens to Karyn?" said Jon.
The woman smirked slightly. "If you ejaculated on Karyn, then you would set up a temporary conduit for your masculinity. She would become extremely masculine for a few days, and gradually it would fade from her and you would regain yours. We would have to start your treatments over again, of course, once you returned to your old self in a couple of weeks."
Jon nodded, feeling relieved.
"If you ejaculated inside her body, however," the woman continued, "then you've probably created a permanent transfer. We could treat her to repress or diminish her masculinity, but you would probably be stuck like you are now."
Jon's mouth fell open.
"We could increase your femininity, so you would look like a woman instead of a man, but we wouldn't be able to change you completely. It looks like you wouldn't have enough... um, 'material' left down there for a proper sex change operation, either. So, please tell me you didn't come inside this Karyn of yours."