"'What shall we do now?' Are you telling me you can't think of anything to do in this situation?" Lisa asked.
She didn't hear any response from Ty, but she felt one. His hand reached down and stroked his cock. Given how tightly she was stretched around his whole body, she felt exactly what he was doing.
"Nice guess," she said, "and I never had imagined you masturbating inside me. Go ahead with that, if you like, but then I'll tell you _my_ idea."
He brought himself to orgasm quickly. Her interior was already pretty thoroughly coated with his cum, from when he had been a giant cock, so this latest contribution was barely noticeable. "OK, so what do you want to do?"
"I thought it would have been obvious, when I had you turn around," Lisa said. "I want you to shove your cock through my pussy, and fuck me from the inside." She felt him shift around a bit to position his cock, and then felt it pressing against, then through, her inner lips. He started thrusting, and she started contracting around him. Her arms stretched to reach her pussy, so that she could rub her clit. When they came, she was amused to see his cum shooting out from her pussy.
"I still think it's amazing having you inside me," she said after a while, "but being stretched out this much gets fatiguing after a while. Do you mind if I make another suggestion?"
"By all means," Ty replied.
"I want you to transform yourself into a newborn," she said, "and I'll birth you. Since I'm stretchy, it probably won't be as painful as normal childbirth. And make me lactate, and make yourself hungry. I want to nurse you."
Ty was intrigued by her idea, and immediately started shrinking and changing. Lisa's very stretched-out body contracted back to nearly normal, other than a large baby bump, and somewhat larger then usual breasts.
She started pushing. It was a little painful, but since she was stretchy, it didn't take her long, nor hurt terribly, to push him out. She grabbed him in her arms, and held his head to her breast. He happily suckled.