Inside job

Jon climbed in head first and did the best he could with what he had to work with.
Karyn was aroused a little more than the last time but it still wasn't enough.
"Hold on down there", she instructed Jon and he crawled all the way inside and braced himself against the walls of her vagina while she stood up. He was slowly slipping out and prayed that her next wish would fix that.
Karyn held the stone in her hand and said,
"I wish Jon was in the best possible position to get me off".
John was relieved that he was no longer slipping out of her, in fact he felt himself being pulled closer to the wall, and could feel his legs fusing together as he saw the skin of her clit grow over him. Other changes happened as well, he grew breasts and his hair grew out, he was turning into a copy of Karyn, at least from the waist up. Below the waist, he was just a fleshy stalk. The changes continued until he was now her clitoris. He still had arms and was able to see despite the dark but he was a permanent attachment to the massive Karyn.
He struggled to pull himself free, but was unable. The more he tried, the more her felt the world around him rumble and quake.
Karyn, meanwhile, was on the floor in the midst of the most amazing orgasm she had ever experienced. When she thought it was over, it would start again, just as strong as the last time. She spread her lips and fished around for Jon but couldn't feel him and assumed her had fallen out and was on the floor somwhere watching her. She decided to give him a show and started to massage her clit, when she touched it, she felt a tiny person where it used to be. Thinking she had found Jon, she gave it a light tug and had another major orgasm. When she recovered, she picked up the stone and wished to know what was going on.
A smile crossed her lips when she realized what had happened. She made another wish to be able to communicate with Jon and said to him,
"whoa, I see I have you to thank for that", Jon responded, only with her voice,
"Yeah, now get me out of here, this is too weird", she felt him moving again as another wave of pleasure washed over her.
"Stop..mmmm...moving" she said through moans of pleasure, but he didn't listen. She picked up the stone and said,
"I wish that Jon enjoyed his new situation".
Suddenly Jon was very pleased with where and what he was.
He thanked Karyn for fulfilling his greatest fantasy and rubbed his hands up and down his new body, sending Karyn into even more ecstatic convulsions.
This went on for hours until Karyn passed out, with Jon still enjoying himself inside her.