Jon said "In that case I want...."
He thought for a moment, the possibilities were really endless, and he tried to come up with the perfect scenario, but he couldn't stop going back to the first thing that came to his mind; he knew he would eventually regret it, but he couldn't... He was too horny to think.
"I want to be an eternally pregnant woman... I want to have a massive pregnancy belly, big enough to bear triplets, but I would never be able to give birth, because there would be nothing to give birth to; my pregnant belly will be a part of my body that I will never be able to get rid of."
This was way too kinky, he couldn't believe he was actually asking for this!
"As well, I want to have really thick thighs that, with the sum of my huge belly and also, really small, dainty feet, will force me to waddle my way through the rest of my life. I also want to have wide, childbearing hips, that will help me support my belly."
And yet, he was still far from done.
"I want to have a pair of breasts almost as huge, japanese K cups, to be precise, absolutely ginormous tits, filled with milk that will never cease to come out from my puffy nipples, as well, I want my areolas to be really big too, about 15cm long of radius. I want a huge, slightly celullitic ass, that will wobble with every step I take. Also, I want my body in general to age so I look like I'm a 38 year-old woman. Finally, and most important of all... I"
He hesitated once again, but realized he was way too far already to go back.
"I want to be constantly horny, and while being able to have several orgasms, my need would come back to me a few hours later."
The machine did its job, and in a matter of minutes, John's transformation was complete. He came out of the machine, waddling and struggling to move. A massive belly, protruding from his body, was the first art of him to come out, then, his gigantic knockers, engorged and veiny, which sat on the belly, his large nipples constantly dripping drops of milk. Finally, the new woman came out fully, she looked like a female, mature version of John. She was completely naked, her pussy dripping with need, she held one hand to her back, and the other rubbed her belly. She waddled and sat on her boyish bed. The wishing rock was still on his bedside table, John, now in his massive pregnant form, picked the rock up, and made a wish:
"I wish that the transformation machine gets destroyed for good, and I wish that I became unable to turn back to my old male form even if I really wanted to, just to wish myself further into my new preggo life".
Jon knew he was going to regret this eventually, but the excitement of the situation made it all so kinky. After he made his wish, the machine was destroyed beyond repair, Jon laid back, now rubbing his new belly with both hands, he let himself fall onto his back on the bed, which he quickly regretted because of the weight of his body. He moved so he was now laying on his side, knowing that, from now on, that would be the position he would be sleeping on. He smiled, feeling himself before falling asleep.