Iimja slowly became aware of his surroundings. He was laying on his back on the ground. It was warm, which was good because he was naked, but not as hot as home. The sound of waves breaking came from not far away. As he slowly opened his eyes he saw palm trees against a blue sky with puffy white clouds.
"So far, so good," he thought. "Seems right."
This body would take some acclimation, so he proceeded slowly. He moved and flexed each limb. They were definitely bigger than he was used to. He turned his head from side to side. "So this was Florida." There were old pictures but no one had been there for centuries.
Carefully sitting up and then standing, he took cautious steps. The bulk of this body would take some care for a while. He felt something unusual at his crotch. A long flaccid penis and big hanging testicles slapped against his thighs. "Now THAT'S different!" he thought, "What would it feel like erect?" Well, that's what he was here to find out.
This man was from about 800 years in the future. His specialty was early human sexuality and this was a brand new research project. Other scientists and engineers had developed a form of time travel and his use was one of the first applications. Although unable to send matter itself back through time, they could send information to create a kind of avatar using local matter in whatever shape they desired, and then link it with his consciousness for animation while his actual body lay in a special container in his real time. He would feel as if he was in the other time and his experiences and memories would be transferred to his physical mind automatically.
With global climate change came significant changes in human society. The short version was that much landmass was now underwater, including most of Florida. Food sources changed dramatically, supporting only one fifth the number of people. Reproduction rates dropped dramatically so most births were clinical, not natural. Genitals atrophied and bodies got smaller for greater heat shedding efficiency and lower nutritional demands.
People now lived much longer since a "personality" could be transferred to a new cloned host body as needed by age or illness. Iimja (pronounced "Eye-m-ja") was over three hundred years old but his current body was about 50.
Most people enjoyed a bit of sex whenever their host body was in adolescence but it was considered more of a diversion and form of play than a serious activity. Iimja had discovered some ancient disks in a library collection more than a hundred years earlier and figured out how to decode and view them. He was fascinated to discover that they were something called "pornography". Understanding American English from the 1970s was a challenge, but he liked challenges, and developed an ear for it. They showed big hairy people with amazing breasts and genitals making a "big fucking deal" out of sex. They were after each other all the time in these documentaries. Watching how seriously they took copulation stirred some ancient desires in him and he avidly searched for more.
As he pored over his research material, Iimja noticed that his thin four inch penis became erect quite often. That hadn't happened since his last adolescence. "Hmmm, am I tapping into some primitive programming?" he thought.
He developed a list of sexual practices questions. Why was there so much oral-genital contact? How did anal sex fit into reproduction? Why did men ejaculate on women's faces, breasts, or pubic hair instead of in the vagina? What was the purpose of same-sex activity? Why did people urinate on each other? And more.
Finally getting permission to use the new time travel tool, he decided to visit something called a "hippie commune" where sex was, according to the historical records, indulged in frequently with a variety of partners. That should allow gathering a lot of data in a short time. Working with the engineers, he modeled his remote body after a male figure in many of the disks named "John Holmes". The face was changed to a unique but handsome one.
As he approached the motley collection of buildings that was the commune, he was relieved to see that some people were nude, like himself, and some were dressed, and everything in between. Colorful garments were popular, like in the videos. As he wandered into the central area, an older woman with large sagging bare breasts approached him with a smile. "Hello stranger. You looking for us? What's your name and where are you from?" Iimja smiled back and tried to talk the dialect. He nodded a response to the first question and awkwardly, with his new mouth, said, "Name Eye-m-ja. Far away." She couldn't place the accent.
The woman reached out and gave him a big hug, pressing breasts like he'd never felt before against his bare chest. The big schlong started to fill, pressing against the belly of the woman. She stepped back and laughed, "Well welcome. I'm Mother May and I guess you like me too. That's a pretty impressive tool. You will be popular here. Are you hungry?"
Iimja nodded so she took his hand and led him to the kitchen. That distraction let him take control of his new pecker and deflate it. Unlike regular humans, he had a high degree of control over all his bodily functions and could override the autonomic processes as needed. That would be very useful later.
The vegetable soup was much better than any he had ever tasted before. May explained that they were vegetarians also using dairy and eggs. They raised as much of their own food as possible which explained the extensive gardens he had walked through and real chickens running about. They were being tended by folks of all ages. May kept glancing at his crotch where the 15cm flesh tube lay flaccid. He filled it enough to lengthen by 5cm and get thicker and saw May's nipples harden and project. He hoped that was a sign of arousal and that she would have sex with him later.