Jon knew that he needed to get a shower before going out in public. Fortunately by this point in the day his mom would already be out doing who-knows-what it was that she did almost every day. As such he did little more than gathering his clothes, which went surprisingly quickly with the extra eyes and arms and hands that Karyn afforded him, and wrapped a shirt around his waist before heading out into the hall.
Karyn, of course, didn't feel it all that necessary to remind him that he hadn't gotten any clothes for her, or covered her up. After all, she was his body, not hers.
Since his right hand was busy holding all of his clothes and keeping that shirt up, Jon used his left hand, Karyn, to open the door, at which point he realized, upon spotting her shamelessly-exposed breasts, that he'd failed to consider HER decency. "Karyn! Wh-where's your clothes?"
Karyn looked at him with mild curiosity, "You didn't get any."
It took Jon a moment to yet-again wrap his mind around the concept that anything he didn't do she wouldn't do, but he just sighed, "Whatever." And pushed the door open, leading in with his left hand, affording himself a view of his hand's bare backside as it walked ahead of him.
Once he was fully inside he tossed his clean clothes onto the counter and started getting set up to take his shower, using his left hand to first swing open the shower curtain, which produced movement in her bare breasts that certainly caught his attention, and then used her to turn on and test the water, which involved her leaning over, affording him a full, unimpeded view of her rump, and since he was standing, that forced her to keep her legs up higher so that her hips were roughly where his were, which meant that he could also just see that more intimate part of his hand peeking through her legs, that palm that even now still felt so warm and moist and ready and...
'No, gotta just get used to it.' After all, Karyn was his hand, he couldn't go getting aroused by his hand all the time or else he'd never get anything done.
That decided, and the water nice and warm, he let the shirt around his waist drop. Unfortunately his cock stopped it so he had to take it off, and without thinking he'd used his left hand to do so, which, of course, expounded his problem, but his resolve would not waver!
With some determination, Jon activated the shower head and stepped into the flow, followed by his hand. Jon then turned the shower from that finer spray his mother liked to the massage that he preferred, only to find that it gave his hand an unpleasant stinging sensation. He figured that Karyn's softer skin didn't take well to the harder water stream, so he turned it back and the stinging went away.
With a sigh he realized that there were a lot of accommodations he'd have to make as time went on. But for now, it was more important to get clean.
Thus he washed himself with his right hand as much as he could, but then realized that he'd have to use his left hand eventually, which then made him realize that Karyn needed a good, thorough washing as well, and what that meant.
When he turned to look at her, where she was standing behind his back and facing away from him, since that was what he'd had her do, he got another nice view of her back. Then, with some nervousness, he turned her around.
'Yup, she really is as aroused as she feels, and as I am.' Her erect nipples weren't helping his self-control much, but he was determined to at least finish this shower. If he couldn't accomplish that, then what COULD he do?
Of course, when Karyn started rubbing down his back, he could feel her breasts brush up against him, and her small hands were driving him wild, even if they were his hands. But then, when he'd had to turn to washing his hand, he'd watched with hypnotized fascination as she carefully rubbed herself down with soap, and the way that her breasts reacted to his use of her hands to gently rub them down looked and felt so...
Without even thinking about it, he brought her closer to him, where his cock, hard yet again, pushed against her belly, and both his and her physical desires were pushing against his mind.
He only barely finished rubbing down her back for her before he started kissing his hand, and she was kissing back, and...
