Jon stood there on the stairs with his new body and undergarments. His nipples visibly erect, pushing through the fabric of his almost comically large t-shirt that rested lightly on his shrunken frame. Blood rushed to his crotch and nipples both, causing them to ache for attention. Jon couldn't believe how fast events had taken a turn after he switched bodies with Zoe and how close he came to defiling his sister after what was simply an act of harmless fun. Standing there on the stairs, staring at the door, Jon tried to figure out what to do.
Zoe was going to be gone for a while, so were his parents. He really only wanted to test try swapping bits of bodies with Zoe because it was convenient to have a test subject nearby, he didn't really plan to keep her body for any longer once his tests were over. However, despite the fact that he could unswap himself with Zoe and turn himself back to normal at any time, Jon didn't really feel like doing so.
After a few moments of consideration, Jon realized several things. Firstly, that while he'd created the ability to swap body parts primarily to help undo the mess Karyn did to herself, he also did it to have some fun, otherwise there was no reason to have given himself half the abilities he had. Secondly, since no one was able to notice that reality had been any other way, no harm was being done. Thirdly and most importantly, he just could not stop his new body from being aroused by this situation and he could only think of one way to put an end to it.
Plus, technically the female form that below his head was his body as far as everyone was concerned. Jon shrugged and headed upstairs back to his room, somewhat eager to explore his new body and by extension the female gender, from a perspective he never thought he had. Besides, Jon thought, it wasn't like he hadn't done any of this to his old body either.
Jon headed down the upstairs hallway to his bedroom, his dainty feet pattering on the soft carpet. He marvelled at how strange his body felt as he walked, everything was moving in the wrong places and the mostly unfamiliar weight on his chest was bouncing slightly with every step he took. He stopped part way down the hall at in front of the large mirror to admire his new form once more.
Standing in front of the mirror was the same image he saw before, his regular old head with its short hair, sitting on top of a petite yet curvy female body. Two large breasts pushing out from under his T-shirt quite prominently, underneath the t-shirt where he had previously had boxers on, he simply only had a pair of dark coloured panties resting on his wide thighs, a pair of panties that were becoming clearly wet and somewhat more see-through then they were before. His large t-shirt on Zoe's formerly petite frame was acting somewhat like a dress, barely covering his crotch. Jon absently noticed that all his nails were painted as well.
Jon smiled at the reflection in his mirror, his nipples continued to remain their diamond-piercing hardness. Something about this situation was driving his body over the edge. He turned away from the mirror and entered his bedroom, ensuring that the door was closed and locked behind him in case anyone came home early and interrupted him.
Standing next to his bed, Jon lifted the shirt off over his head and discarded it nearby, showing off his new body in all its glory, merely covered by two pairs of flimsy cloth that were rapidly becomes less and less effective at what was laying beneath. Jon looked down at his body, admiring his new assets, rapidly disregarding that until a few short minutes ago this used to be his sister. Jon brushed his feminine hands over his chest, trying to find a way to remove the bra that was containing his new breasts. He shuddered as the feeling of his breasts being caressed only served to maintain the aroused state he was in.
Finally figuring out where the clasp was for his bra, Jon all too eagerly pulled the bra off his chest and threw it away letting the soft, supple pair of c cup breasts now dangle freely from his chest. It didn't take a rocket scientist to figure out how to take panties off, so in a fraction of a second later Jon was fully disrobed, his breasts and pussy exposed to fresh air. Jon quickly climbed onto his bed and sat up looking down at the new engorged womanhood between his legs.
Jon ran his soft hands along his breasts, gently caressing the pliable flesh as he used his new thumbs to flick the hardened nipples as he squeezed his breasts. Jon was losing himself in the feeling of his breasts as the constant ministrations of the sensitive tissue sent waves of euphoria throughout his body. He could feel himself getting closer and closer to something that couldn't quite be described as he manipulated his breasts, over and over, rubbing them harder each time.
Almost by instinct, one of Jon's hands made it down his body towards his crotch, while the other passed from breast to breast, stroking and caressing with an ever increasing fierceness. His free hand reached the ever moistening slit that presented itself to the world between his legs. Jon, barely aware of what he was doing flicked his hand against something just above the slit. Stars exploded behind Jon's eyes as his hand found his new clitoris, completely unprepared for the feeling that would result. Unable to think of anything else now, Jon's hand gently stroked his clitoris, over and over again while he left go of his breast and brought his other hand down to his crotch as well.
With both hands, Jon manipulated the sensitive labia and clitoris, while the moisture seeping out of his vagina lubricated his hands all the while. After a moment, Jon plunged his fingers into his vagina, throwing back his head, barely able to suppress a scream as his penetrated himself with his new hands. Jon hammered his fingers in and out of his new vaginal passage, stroking everything he could get his hands on, having no idea what he was doing anymore he was simply a mindless observer to the ministrations of his hands as he probed his new slit with his hands, stroking, rubbing more and more fiercely.
Jon's body bucked as he continued to finger himself to oblivion, he kept it up until he could take it no more. Jon's body fiercely arched up in the air as he let out a cry like he'd never done before. After a second, he collapsed back on his bed, unconscious, having experienced his first female orgasm; the sheer power of the moment overwhelmed him. Jon lay there on the bed, sleeping. His hands, covered in vaginal fluid, remained partly embedded in the recently pleasured womanhood.
Jon awoke some time later in a daze, unsure of what happened initially. Jon looked down at his body in shock, seeing the unfamiliar feminine form below him, with two hands on the empty crotch and one leg draped off the side of the bed. Jon sat up in a panic; he withdrew his hands and looked down in surprise at his body. He glanced down at the floor and saw the discarded clothing from earlier sitting haphazardly on the floor, and it came back to him.
Jon stood up carefully, his vagina and breasts still feeling sore from his little masturbatory exercise earlier, he glanced down at his body. His vagina and breasts both had reddened somewhat, still throbbing but more out of soreness then arousal. He lifted his sticky hands up to his face and sniffed, a whiff of something fishy stung his nostrils.
Jon surveyed the mess in his room, the unusually dirty bed sheets, the wet panties, the crumpled bra and t-shirt, all signs of his first exploration into the female sex, still littered the room. With a quick glance of the click, Jon observed that it had been about two hours since he'd first "become" a woman, and made quite a mess in such a short period.
Still bathing in the afterglow of his first female orgasm, Jon decided what he should do next.
