"I think you have had enough fun already today, " said Aaron.
"Aww, don't be such a baby, " said Lauren, as she leaned towards him on the bed.
Aaron started scooting backwards away from her, dragging his butt across the bed. Lauren grabbed his pants, pulling him back towards her. His pants slipped off his smaller frame. Lauren pulled his underwear down, too.
Lauren giggled a little. "You look like a baby down there, too, " said Lauren with smile. Aaron tried to cover his small dick with his hands. It had shrunk in proportion with his body. "But not for much longer."
Could she somehow make my dick bigger? thought Aaron. He stopped fighting, and let her rest her hands on his thighs.
"That's a good girl, " said Lauren, as she began to stare at his dick.
Wait ... good girl? What was she talking about? thought Aaron.
But he didn't have long to think about it, as his cock was suddenly filled with a pleasurable tingling sensation. It felt like every nerve on the shaft of his dick was stimulated at once. His cock quickly stiffened as it became fully erect. He moaned in ecstasy. Lauren stared at his dick with intense focus. Aaron noticed that one of her hands was now in her own shorts. She seemed to be enjoying herself, too. He didn't care. He felt so good.
His pleasure increased so he expected his dick to be getting bigger. He was shocked to see it shrinking below him. His testicles looked smaller, too. His scrotum was retracting, pulling his testicles into his body.
"No, no, " he moaned. "Stop, this is wrong."
Lauren grunted. "No, this feels so right. So good. I didn't know it could feel this good. I need more."
He could see her clit expanding, stretching out of her shorts, and into her hand. She continued to stroke it, urging it to grow larger. It was already longer than his dick had ever been, and was thicker, too. He saw that he had a vagina with a small clit. As Lauren's dick grew, his cunt got smaller and tighter. He gripped the sheets tightly, overwhelmed by the pleasure.
"No more, " moaned Aaron. "It's too much."
Aaron came, but the orgasmic feelings did not diminish. They just got stronger.
"No," moaned Lauren. "I want more. I want it all. I want all of your masculinity."
Aaron's whole body lit up, from the top of his head to the tips of his toes. His skin became softer, and more sensitive. His breasts swelled, massive on his tiny frame. His puffy nipples grew longer, as his areola expanded in diameter. His waist shrank impossibly thin, as his ass ballooned into a nice heart shape. His hands and feet shrank even more, becoming slender and dainty. His hair became lighter in color and grew down his back, as all of his other body hair receded into his body. Finally, Lauren came, squirting a massive load of her seed onto his face and belly. She released him from her grip, and leaned back against the bed frame.
"That was intense, " said Lauren. Her voice was a deep baritone. "Was it as good for you, baby?"
Lauren got up and examined herself in the mirror. Aaron saw that she was now an Adonis, with a 6'2" muscular frame, chiseled good looks, wavy brown hair, and a huge cock. It looked about 7 inches long flaccid and almost an inch in diameter. He looked down at his new tight pussy, and didn't think he could handle something so large. For some strange reason this caused him to feel a little upset.
Am I actually attracted to her like that now? thought Aaron.
Lauren turned and looked at him. She clearly liked what she saw. Her penis begin to fluff up.
"Thought you would enjoy my little reward. Feels great, doesn't it? A male orgasm is intense, but not nearly as much fun as a female one. Want to feel something even better?" asked Lauren.
Aaron realized with a shock that she was offering to have sex with him, with her as a male and him as female. What was even more shocking was that he was actually tempted by her offer.