Afterward, Lisa changed her body back to normal. She said to Ty, "I still want to experiment with extreme transformations. Despite the problems it caused, that last transformation was the most enjoyable one I've experienced. At the time, I felt like it was the ultimate, and that I'd never need to try anything different."
"I think that was at least in part due to the degree of mental changes that occurred," said Ty, "and that's exactly why I'm afraid to do any more like that. I'm worried about the risk that mental changes could be permanent. I think they almost were, that time. I told you what I had to do to get your mind back, and I'm actually not completely certain that I did, given how much had to be copied from my mind."
"My mind feels the same as always to me," Lisa said.
"But how would you know if it was different? If it was altered, what would be your basis for comparison?"
"I see what you mean," Lisa replied. "But couldn't you make the transformation, specifically wishing for the mental changes to be temporary? When you transformed me that last time, did you even try to control how the mental changes would work?"
"Now that you mention it, I didn't even think about any mental changes until later, when it became apparent that they were problematic. Maybe I could restrict transformations to physical only," Ty said.
"Well, that would be better than not transforming at all, though I think the corresponding mental change was part of the fun. But let's try the same thing again, with no mental changes."
Ty reluctantly agreed. He removed his pussy, and transformed her into his cock, with no mental changes.
Having done this before, a week ago (by the altered flow of time in the room), he was not very enthusiastic about it. He stroked his cock, now Lisa, and hoped she was enjoying it, but he wasn't especially. It wasn't so much that the novelty had worn off. It still seemed pretty hot to have her as his cock. Her entire being. But the bad experience it led to the previous time soured his feelings about it. Still, he wanted her to have a good time, so he masturbated despite that. It took him longer to reach orgasm than before, and the orgasm was one of the least satisfying he'd ever had. She was probably disappointed in it, too, he thought. He decided that he'd have to try again, but that he'd try to psych himself up to do better.
He slowly stroked himself (her), while thinking about some of the other amazing transformations they'd tried. He thought about pussy tongues, and zippers, and marbles. He thought about pillows, and stretching. He thought about having multiple genitals. That's it, he thought. He decided to duplicate his cock again. That was one of the first transformations he'd done to himself, before he actually met Lisa. His cock split into two, and he used one hand to masturbate each. Thinking about the various transformations had improved his mood, and now, along with a second cock, he had finally regained his enthusiasm. He stroked harder, and as he felt himself approach release, started edging.
When he finally could hold it off no longer, he had a great orgasm, putting the previous one to shame. He felt much better. And also quite tired. He stroked himself slowly, thinking about transforming Lisa back, and fell asleep.
Hours later, he awakened. He needed to pee. He went to the en suite bathroom he'd created off Lisa's bedroom, and realized he'd never urinated from multiple cocks before, nor with Lisa as his cock(s). It was a bit of a challenge to aim both.
He merged his two cocks back into one, and then transformed it back into Lisa.