Looking around the room, Jeff thought about what he wanted to make human. He felt like it would be fun to make a friend, maybe even a brother. Yeah, a twin brother would be great.
But he would want his twin to be close to him, and to know him really well, like a real twin would. So he'd need something he had owned for a long time, and been close with. Maybe even intimately close.
It was then that he noticed a bit of cloth sticking out from under his mattress. Moving over, he pulled it free, and thought to himself as he looked at the familiar object. It was an old hanes sock, the cotton slightly worn, and the fabric extremely crusty and dirty.
Jeff had owned this sock for years, and had used it on countless nights to hide the product of late-night masturbation sessions. It was probably the item he was closest to in more ways than one, and would make sense that if it was human it would be something he could share secrets with.
Laying the dirty sock on his blanket, he quickly snapped a photo and uploaded it to the program, setting it up to become his twin brother by using himself as the comparison. He decided to leave the duration as one day, thinking that if he enjoyed it then he could always make it permanent.
Executing the program, Jeff looked over to his bed as the sock began to twitch and move. It stretched and pulsed, growing larger and beginning to fill out as if there was a balloon inside the hollow cotton. Growing rapidly to the size of a human, the cloth began to change shape, limbs pushing out and filling in different shapes, raising up as it began to take human form.
Soon, sitting on the bed appeared to be a person wearing some sort of full-body one-piece costume made from the same fabric as his sock. The opening rounded out into a head, leaving the entrance to the sock as an open mouth.
Further details began to take shape, mitten-like hands splitting into fingers as an indentation for a bellybutton appeared and facial features showed up, giving the impression that the cloth was becoming thinner and more skin-tight on a person inside. The white and grey pattern began to fade into the pink of flesh as hair poked through on top of his head, until finally Jeff was looking at a naked clone of his own body.
The clone Jeff blinked, then raised one hand, turning it slowly. It touched its chest, and smiled.
"Wow, being able to move and stuff feels...really weird."