'Earlier'
"So on top of getting rid of my eyes completely, it's my three fuckholes that needs to be addressed." Amy commanded.
"Can't we just use a round object, like a broom shaft or something?" asked Mark.
Amy shook her head. "No, I was thinking something more... personalized." She stared straight at Mark's crotch.
"Meaning?" Mark asked with morbid curiosity. He wanted to know where it was going.
"You get as erect as you can. Then put on a condom. Ram your dick as deep into my ass as you can. Wait for my ass to change to fit around you. Pull out, and then repeat for my pussy and mouth." Amy blushed as she laid out her plan.
"So you are just going to cocktease me three times?" Mark was not quite sure about her little plan.
"Don't worry. I will give your friend plenty of attention afterwards, I promise." She fiddled a bit. "This body is so sensitive that I haven't stopped feeling horny, ever since my breast expansion. Even as latex, my pussy is still wet."
'Present'
Amy had placed a headband around her eyes. She was excited. Soon her face would be nothing but her mouth, and she was looking forward to it. But seconds passed and nothing happened. She readjusted the band and tried again. Nothing. She took it off and shrugged at Mark.
"Maybe it just stopped working after your mouth turned?" he asked the frustrated latex woman. She then facepalmed and put the headband back on. This time, it fused with her, turning her face completely blank, aside from her lips. Mark found the visual uncomfortably uncanny. Amy noticed his expression and faced the mirror. She mirrored his expression, and then looked away as her new expression was even more horrifying. She quickly returned other facial features, if for just a while.
"Why did it work this time?" Amy walked to Marks computer and started typing in the Notepad program they had started up in cases like these. Mark looked at her answer. "So you have to absorb it manually now, then... So that means you can wear clothes now?"
Amy mouthed a "Yes" before quickly nodding. She had to get used to not being able to talk. She then leaned over and wrote "but don't know how much clothes will work when I look like this."
"Really? I cannot see where there is an issue." Mark said in a silly tone. Amy gave him a look of disappointment. She then walked over, found a pack of condoms that was Mark's size, and tossed them at him. She then bend over and started wiggling her ass.
With condom applied on dick, Amy was getting nervous. Not because she was about to get penetrated from behind, but because she was a bit afraid of how good it would feel. Mark readied himself behind her, grabbing her large soft ass cheeks and spread them as far as he could. Amy let out a silent gasp at that moment, the anticipation slowly killing her. It didn't last long though, as Mark stuffed his dick as far in as he could. Amy could feel that he had reached as deep as possible and started the fusing process, resisting the urge to move. A few short seconds later and what she could feel was her ass wrapping perfectly around Mark's dick. "Now its made to fit" she thought to herself as she slowly removed herself, with a little 'pop' sounding as the tip got out, noticing that her new asshole could taste his dick.
"I don't know if I can do that two more times." Mark said, annoyed by Amy's antics of the slow removal. Little did he know was that it was because she had to fight the urge to just ride him. There was plenty of time for that after they were done.
Next up was her pussy. She made Mark lie down and slowly pressed his dick into her pussy until it was completely inside, and started the fusing. Once again, she slowly lifted herself as to not engage, the feeling of Mark's dick scraping up her walls telling her to just do it. She was happy her ability to blush had disappeared or she would be as red as the reddest of tomatoes.
Amy looked in the mirror on that lone mouth on the sphere which was her head. She was repulsed by the looks of it, and puckered her mouth to simulate the O-shape which it was soon to have. It looked much better. She was ready. She turned around to see that Mark had managed to put on the last condom and was just waiting on her. She walked to him, swaying her hips as her small tips rhythmically tapped on the floor. She was ready for this. Soon, she was the sex doll she wanted to be. A sexy, latex doll with a fetishized look. When it was done she would be a woman shaped thing, with a fuckhole on an orb, two large smooth orbs on its chest, a waist with an impossible small size for what it was holding up, a pink tube between the legs, smothered by sexy hips attached to a glorious ass, with some amazing legs ending up in two small points on each side. As far as Amy was concerned, she was still the same, but felt she had no right to think of herself as human anymore. She didn't want to. IT was made of latex. Sure, it was living latex, but latex nonetheless. Sure, it was still Amy on the inside, with all of the experience it had as a human, but it was something more now. Or less, was probably the right term. It was about to be nothing more than an animate fuck doll, and it couldn't be happier.
It kneeled before Mark, taking in his cock. It licked its mouth and then looked the man in the eyes. "Thank you." it mouthed as it swallowed his dick. It took a moment, but soon the condom was absorbed and the mouth, like its ass and pussy beforehand, formed perfectly around the dick. "Time to return my gratitude." it thought as it started sucking on the dick, moving the head back and forth, as the insides got coated in the strange lubricant which its body generated. Mark groaned as Amy went to town on his dick, and it didn't take long before he came inside its mouth, the hot cum covering the insides of the dolls mouth, the doll relishing the salty taste. It also noticed that the semen got absorbed into it. Nothing special happened, it was just slowly drained through the insides of its mouth. "Yummy, and self-cleaning. Amy, you truly are the perfect sex doll." she mused to herself, as she used what control she had of her mouths insides to squeeze the rest of the cum and 'drink' it.
"Oh, wow. Amy, that felt fantastic." said Mark as he stroked the smooth surface of the doll's head. Amy squeezed his dick in response, before pulling out with a sound 'pop'. It looked up at him, and Mark was convinced she was attempting the impossible and smile. Her lips had gotten even bigger, and shaped in a way that was made for cock sucking. "Mostly because it is." Mark thought to himself. He then also noticed the lack of baby batter inside the fuckhole. "Wait, where did it go?" he asked.
Amy stood up and typed on the computer. Mark read her answer. "Wait, really? That's great." he replied.
"ikr" wrote Amy in response. "So want a proper fucking now, my sexy owner?"
"Amy, none of that. While you look like that, you are still my female friend, so don-" Before Mark could finish, Amy held his mouth. She made a hush motion with the other hand and started writing.
"No, I am no longer a woman. I am a latex sex doll. If you don't want me to call you owner or something like that, fine, but I am an object now. Sure a moving, thinking object, but an object, still. Hell, my current look was made specifically with the help of your instructions, and formed specifically for your dick." It paused its typing for a moment before resuming. "I am your plaything now. Or rather, I WANT to be your plaything, your toy, your possession. I am not a woman, or a girl, heck, I am not a human anymore. I am a thing, an IT and want to be treated as such. So I won't call you owner or master or whatever. But I am not a she or a her either. I am Amy, the shapeshifting latex thing, ready for you to have fun with, and it only has one question." It paused again to see Mark's reaction, and then wrote on with a mental smile. "Want to test this sex doll's amazing pussy?"
"If you insist little doll." Mark sighed. "But wouldn't be thinking like a sex doll turn into a slippery slope?"
Amy thought for a moment and then wrote "Which is why I see myself more as a shapeshifting latex creature currently in the form of a sex doll. Don't want to go down the road where going inanimate become a pleasurable thought. At least for now, and hopefully the day will never come."
Mark was a bit concerned with the 'at least for now' part, but they would cross that bridge when they reach it. Which, as Amy so wonderfully stated: Hopefully never come.
Mark's dick was still alive and kicking and with that discussion out of the way, the two of them were ready for the next round. Mark changed to a comfortable position on his bed, as the latex girl climbed up next to him. "So, show me the attention you promised me." he said with a wink. The sex doll was practically already straddling on top of him when he had finished that sentence. It was horny and hungry for cock. It slowly pressed itself down on Mark's dick and its own mute nature was the only thing that kept the room quiet as Amy screamed inside its own head for how good the dick felt. It then started moving up and down the rod, slowly introducing a rhythmic hip thrust on top of that as it tasted Marks cock and precum. Amy was in heaven as the doll went on auto pilot, holding momentum up to feel every inch of the dick, its new control over its pussy hugging the dick tightly. It would ride that dick forever if it could, but alas, humans all had a limit.
Mark was grunting as Amy rode him, the sex doll squeezing on his dick as tight as can be. He was almost convinced that the pussy was massaging his member, and he was all for it. He looked up on the dolls giant balloons that pretended to be tits and on the dolls face where an unchanging expression bobbed up and down, fucking his brains out. Has the doll took care of him, he dreamed of stuffing his dick between the two orbs and see how the doll would react to that. And with that thought he shot his load into the black fuck toy.
Amy could taste the cum as it entered it, its strange absorption property quickly kicking in, taking in all the sex juices. It found it strange to taste with its pussy, but the doll was happy about it. It didn't know if the magic latex had a hand in it or not, but from what knowledge it gave the doll, it was sure that there was at least a bit of magic help for loving the salty taste spitting forth from the dick. It kept moving until the penis started to deflate, shrinking inside it until it lazily plopped out.
"Sorry, Amy. Guess I'm at my limit." Mark would have loved to continue, but there was only so long before time runs out. He looked at the doll, expecting it to make a disappointed or mocking gesture but instead it sprouted Amy's face as nipples as pink as its lips appeared on its breasts. She leaned down on him, starting to kiss him as she started to stroke his dick.
"Sorry again, Amy, but looking like that, no way I can think of you as an object." He managed to say in between the kissing. Amy looked shocked before she returned a warm smile and went down for another round of latex tasting kissing.