Arianna was just trying to get her PHD, but with some help from an older man, she got a lot more.
Arianna was excited to finally be developing the physical side of her PHD thesis. She laid on the mattress in her studio apartment and slowly rubbed her clit. Academic successes always got her in the mood, and this was her biggest yet. She’d had the idea for her thesis since her undergraduate in Biomedical Engineering and now she finally had the funding to get started. She took hold of her small dildo and began working it into her wet pussy. The funding was less than she’d asked for, but based on her initial results, her advisor was willing to release full funding and pay for test subjects. As she imagined taking her experiment to its final steps she began to quiver and silently came. Arianna laid there panting and drifted off to sleep.
The next day Arianna had a light day and by noon she was in the Engineering School’s machine shop. She waited for the technician to be wrapped up with two undergraduates. Arianna stood there at her petite 5’2”. She’d worn jeans and sneakers since those were required in the machine shop. As Mark finished talking to two freshman engineering students he noticed Arianna standing in the shop’s doorway. He’d seen the little cutie before but didn’t think he’d ever interacted with her. He tried not to stare or anything but he was pretty sure this girl had relatively huge knockers. You couldn’t tell from her beat up sweatshirt but Mark was pretty sure.
Mark walked up to her and noticed that she was older than he had originally thought, “Anything I can do for you, ma’am?”
Arianna smiled and stuck out her hand, “Hi I’m Arianna, but you can call me Ann. I have an experiment that I need to build for my PHD and was told I could build it here.”
Mark took her hand and shook it, “I’m Mark. Most PHD candidates just give me the plans and a cost code and I take care of it from there. You can just email them to the machine shop address.”
Arianna looked at her toes, “I don’t have the budget to have the project built. I have the plans right here, and I was hoping you could teach me how to use the equipment.”
Mark had been through this before and knew that she was probably telling the truth. The shop was fairly busy so Mark decided it’d be best if she came back later, “I tell you what, if you come back at four I can walk you through the machines and get you headed in the right direction.” He took the plans and sent her on her way.
Arianna was still so excited that she almost ran back to her lab. She’d work on the experiment’s frame in the shop, but the literal guts of the experiment would be made in her lab. Arianna’s PHD was in obstentricical engineering specifically looking at the addition of lubricants to aid in the birthing process. When she got to her lab she immediately began work on an artificial womb and vagina. She knew where all the chemicals she needed to make the membranes were and now she could confidently sign them out.
The idea was that different types of lubricants may aid in the birthing process and she was going to test pulling a variety of wooden eggs through a cervix and vagina and test if and by how much the lubricants reduced the required force. Arianna got to work and by three thirty had two sets of guts curing.
Mark had reviewed the plans and was at first surprised by what he saw. He then looked up this Arianna on the school website and received confirmation that she was actually building a frame to hold a fake pussy and she was going to pull things out of it. Mark switched to his phone and looked for her social media accounts. It didn’t take much digging to find her. She kept a pretty clean social media presence but he found one picture of her and a friend in their swimsuits that got Mark’s blood pumping. The sweatshirt might hide her tits but this photo did not. Mark reasoned they could be more than DDs but with her otherwise small frame she looked like she was about to tip over.
Arianna walked into the machine shop and saw Mark at his desk. As she approached him he put his phone down quickly and started clicking furiously on his computer. Arianna assumed he’d been watching porn, she tried to peek at his crotch, and sure enough he had an erection. Mark pulled out Arianna’s plan and launched right into it, “Hey Ann, this really isn’t too big of a build, and since it looks like you’re putting together the important parts I think I could knock these out between other projects. Should have the frames done in a couple days.”
Arianna could have kissed him on the spot. She’d scheduled herself three weeks to have the experiments ready, if she worked through the weekend she might be ready to test on Monday. Smiling Arianna responded, “Thank you so much you have no idea how much this means to me.” Mark got up to shake her hand again and Arianna went in for a hug, purposefully pressing her chest against him and making sure his hard cock pressed against his stomach.
Arianna had never used her body to get anything from a professor before, but she felt like this guy had earned something special. She released him and walked out. She was getting horny again but knew she should keep working on her experiment. There’d be plenty of time to get off before bed.
After a couple of days Arianna swung back by the machine shop to check in on Mark. He had the frames ready to go. They were two, two foot cubes made from strut, with a ring suspended vertically slightly off center. Arianna inspected it and was pleased that it’d be perfect. She didn’t quite have enough space in her lab for these just yet though. “Hey Mark, these look great! Mounting rings and everything, I can’t wait to hook it all up.”
Mark was pleased to see the girl again. She wasn’t really a girl, at 24, but compared to his 45 she seemed young. He smiled at her trying to put out of mind how badly he wanted to fuck this little brunette. “Yeah, it should all be there. Where is your lab? I can bring these wherever you need ‘em.”
Arianna frowned slightly and Mark could tell she was going to ask for another favor. He’d do it though, whatever she wanted he’d probably do at this point. Arianna finally piped up, “My lab is really cluttered right now with the molds and such for the wombs, is there a free desk down here that I can situate them at?”
This wasn’t really too big an ask. The machine shop was in the building’s basement and Mark had a couple storage rooms assigned to him. He thought for a second on which would be best. “I think I can figure something out. I have a work bench in room B11 that I could mount these to, that way you could keep using your lab to make the, the other bits.”
Arianna beamed at him again, she checked to make sure the room was empty and gave him another sensual hug. Mark closed his arms around her this time and she felt his dick get hard. She’d never understood how a woman could use her body to get things, and not feel gross afterwards, but this felt different. At least that is how she was justifying it. They eventually released and Arianna thanked him as she left. As she got to the door she remembered something, “Oh, here, let me write down my number. Once the frames are up I’d love to try them out.”
Mark took her number and waved her out. When he was pretty sure she was down the corridor he locked the machine shop door and went to his desk. He had Arianna’s swimsuit picture saved to his phone and within seconds he was rock hard and beating it to that young cute thing.
The next day was Friday and Arianna didn’t have any classes. She’d finished the first two mock wombs and had tossed them when the next pair was complete. She already had the third set curing but these two should be perfect. She looked at the modeled vaginas, the front lips themselves were taken from a mold Arianna made from her own sex. The molds didn’t really capture how cute she thought her cun was, and honestly nobody would really believe these silicon messes were modeled from a real pussy.
She jumped when her phone chimed. It was Mark, “Securing the frames now, should be ready for use in twenty.”
In ten minutes Arianna was knocking on the door to B11. Mark let Arianna in and without a word she got to work on the frame that had already been secured. Mark went to work on the other frame. Every other time Arianna had come down she’d planned on wearing clothes that covered herself up, since today she was coming from the lab upstairs she was casually wearing a tight t-shirt that showed off her beautiful breasts. Mark did his best to focus on his task and finished right before Arianna was ready to mount her second womb. He stepped back and let her get to work.
When she was done she stepped back and noticed Mark had just been watching her. She gave him a big smile and took out her laptop. She pulled a string through each of the vaginas and wombs and hooked them up to tension meters on one side and 4 inch diameter wooden eggs on the other. Arianna hooked the other end of the tension meters to a sting and small motor. After setting up the meters and her laptop, Mark could see two graphs on her screen. Arianna turned on the two motors and they began buzzing and Mark could see the data reflected on the screens.
The eggs were pulled to the fake cervixes and after a couple minutes the motors burned out. Arianna was crushed. She was at the brink of tears when Mark finally said something, “That's no biggy, probably should have told you that was a bad idea anyways, it’d be better to use a counterweight than those little motors. Give me a sec.”
He was back in a flash and handed Arianna a brass set of weights as he jerry rigged a basket hanging down the side of the desk. In minutes Arianna was collecting data again. She added weight bit by bit until the eggs pulled through. The tension meter showed a clean graph and Arianna was in a trance. They kept this up for another couple hours till the artificial cervix just completely gave out.
Mark was exhausted but Arianna was ecstatic. She wanted to run home and process the data she’d collected. She turned to Mark to thank him and saw how tucker out he was. He had been helpful throughout the process and Arianna figured she owed him big. She walked over to the chair he was in. Before Mark had realized what she was doing she was so close he couldn’t stand up without pushing her. He was about to speak when she dropped to her knees.
She maintained eye contact as she undid his belt and fly. She reached up and pulled his jeans down. Mark trembled as she wrapped a hand around his cock. He wasn’t massive or anything but he felt like a god seeing her little hands wrapped around his shaft and her big green eyes staring up at him. He was so fixated on her eyes he didn’t see her stick out her tongue. The sensation of her warm wet lick running up his length caused him to gasp.
Arianna hadn’t had too many relationships in college, but due to her painfully tight pussy she had perfected sucking dick. Mark had clearly not seen this coming and his dick was musky and unkempt, but he’d helped her so much she didn’t let any of this phase her. She placed the head of his cock in her mouth and began working it down her throat. She didn’t get why she could take a cock in her mouth no problem, but her vagina was just too tight. As she began deep throating her mind wondered to how she could use her experiments to help loosen her up a bit. Before she knew it Mark cried out, “Can I cum on your tits?!”
Arianna pulled her mouth off his cock and stripped off her top and bra. Mark wasn’t the first guy to ask this, and although Arianna was embarrassed both by the size and sagginess of her tits, guys didn’t seem to care. She began popping the tip of Mark’s cock in and out of her mouth till she felt him seize up. She pointed the dick at her neck and tits and kept stroking it. Mark gripped the chair as he came on the young girl.
When he was done, Arianna stood up and wiped his cum off her tits and deposited it in her mouth. She swallowed it all down and put her shirt and bra back on. She smiled at Mark, “I’m going to take this data and start analyzing it, but I’ll let you know when I do my next round of testing.” She grabbed her bag and left.
Mark was in a daze all weekend, when Monday rolled around he was surprised to get a text from Arianna, “Hey, B11 at 4” Mark felt his cock twitch. The day crawled past but at four he headed to the storage room and unlocked it. He’d barely stepped inside when Arianna called out to him, “Hey can I get a hand?” She was down the hall pushing a cart with several silicon models on it. Mark moved to help her and soon Arianna was hard at work setting up the new wombs. Monday went a lot like Friday, even culminating the same way. Mark was ecstatic when Arianna said “See you tomorrow.”
Arianna returned to her apartment and began compiling the data. After an hour she knew she needed to cum. She’d planned out her experiment ages ago and already had the next phase ready. If the silicon and wooden eggs provided valuable data then she was going to move to the real thing, inserting small rigid balloons into women’s cervixes, inflating them, and then pulling them out. She already had the balloons purchased with the money she saved on the testing frame. It could be inflated up to four inches in diameter, but Arianna was only planning to go to an inch and a half for her experiments, no need to rip apart people’s cervixes.
Arianna inserted one of them into her wet pussy and using a bicycle pump pumped it as much as she could without being in pain. She was wincing a little but as she laid back down on her vibrator and continued working her pussy relaxed and soon she was enjoying the full feeling. She kept working till she was close to climaxing. Barely able to control herself Arianna reached down and pumped the balloon up a little more. It hurt but she went until she came. As she came down she slowly pulled the balloon from her cunt embarrassed that it’d hardly reached an inch and a half in diameter. In a bit of a daze Arianna forced the balloon back into her and went to sleep.
The rest of the week flew by. Arianna continued working with Mark in the evenings, and making sure he received his payment, during the day she’d work on her data, getting it ready for submission to her advisor. By the end of Thursday they’d completed all of Arianna’s planned testing. While blowing Mark she came up with an idea that might sway her advisor into giving her more funding right off the bat.
After swallowing Mark’s load Arianna hurried home to make sure everything was ready. As she assembled what would be needed for her last experiment she began getting aroused. She still had her balloon in her pussy and was up to a whopping two and a half inches. Arianna knew this wasn’t much, but it wasn’t painful anymore and she knew she could take a cock. She let a little air out of the balloon and began pumping it in and out of her cunt. She walked through the next day’s activities as she applied her vibrator to her clit.
Four o’clock couldn’t come soon enough for Arianna. She had a bag filled with everything she’d need Mark to use. When the two of them were finally alone in the storage room Arianna explained what she was planning, “I want to try something different tonight, I want to try the real experiment on me.”
It took a second for Mark to put together what she meant. Before he could respond Arianna had already begun stripping. Mark’s mouth was wide open as he stared at Arianna’s body. From the stomach down she looked untouched and nubile, her pussy was completely bald and no visible labia. It looked so inviting. From her tits up though she was completely woman, he got a good look at her large areolas and tiny nipples. She had a determined look on her face that showed her age. She cleared her throat, “I’ll need you to open me up a little with the speculum and then apply this ointment to my cervix. After an hour I should be ready for the test. You’ll insert the balloons, inflate till you hear a click, and you’ll pull it out and we’ll log the data.”
Mark agreed to help and Arianna got up on the work bench between her two frames. She used the frames as stirrups and exposed her sex to Mark. Mark applied a little lube to the speculum. He approached the cutest pussy he’d ever seen. He spread her lips and regretted that this was how he was interacting with her. He pushed the speculum in, eliciting a yelp from Arianna as the cold steel touched her delicates. Soon he had her propped open and with the help of a flashlight could see her cervix.
Mark had fucked many women in his lifetime but he’d never actually seen the little bulb with a hole in it. The ointment smelt like a cleaning agent, but Mark dipped a finger into it and then slathered it around Arianna’s cervix. “Is that good? It looks like it’s covered.”
Arianna was feeling a relaxing tingling sensation in an area of her vagina she didn’t know could feel. She looked up at him from between her legs, “Yeah, that should be good, now we just wait an hour.”
Mark pulled the speculum from her and her pussy relaxed back to its adorable state. An hour was a long time and Mark was pretty damn hard. He’d never asked a woman this but he knew this was no ordinary situation, “Can I jack off while we wait? I’m having trouble concentrating while looking at your pussy.”
Arianna was surprised that she blushed. She realized she could have explained things a little better and felt bad that he felt like he’d have to beat himself off, “You can if you want, but give my pussy a minute or two to relax and I can come down and suck your cock instead.” Arianna wasn’t sure that she’d ever said pussy or cock to a guy she was sexually intimate with.
Mark nodded and just kinda stood around until Arianna started to dismount the table. Mark moved forward and just picked her up and set her on the ground. Arianna had realized he was larger than her, most guys were, but she hadn’t noticed how strong Mark was. She silently undressed him and to her surprise he had pretty big arms and although no six pack, still a toned stomach. Arianna looked up at him, “If you lay on the floor we could sixty nine.”
Mark was on the ground in an instant. Arianna came around and straddled his chest. With her head at his cock her pussy was too far away from him to reach, he did have an amazing view though. As she lowered her head down she felt his rough hands grip her sagging tits. She felt Mark’s strength again as he squeezed her tits as hard. If she didn’t have a cock in her mouth she would have cried out despite her arousal. His hands were calloused and beat up from working in the machine shop all day, and Arianna felt tens of pricks across her soft melons. As Arianna drove Mark’s dick down her throat, Mark picked up on her rhythm and was soon squeezing and pulling her down by her tits in time.
Arianna almost wept with her sexual frustration. If she had any stimulation on her clit she’d be coming. Mark pulled hard and Arianna collapsed a bit spreading her legs further apart and landing her wet cunt on his chest. Arianna lit up when she felt something to rub against. Mark marveled as the little pussy grinded against his chest, inches from his face. Between her beautiful pussy, soft mouth, and juicy tits Mark was at his end and was soon cumming down Arianna’s throat. As Arianna swallowed she rubbed harder until she was cumming too. They laid on the ground for a minute before Arianna got up and started setting up the tension meter and balloons.
Her phone alarm went off and Arianna got back on the table and spread her legs. Mark didn’t need lube for the speculum since she was still dripping wet. Mark could swear that Arianna’s cervix was larger than an hour ago, and he was a little less worried about forcing something up there. Arianna walked him through the process and soon she felt the tip of the balloon press against her tiny hole. She grimaced as Mark forced the device into her womb and was relieved when he finally stopped pushing.
The pumping sensation was completely different from when she’d done it to her vagina. She was close to crying out when she heard the click, signifying that the balloon was an inch and a half in diameter. Mark stopped pumping and attached the tension meter. With a nod from Arianna he began applying load. It took almost twice as much weight to pull the balloon out and seeing as this was an unlubricated attempt Arianna was in much more pain than she anticipated.
They got clean data though and Arianna mentally prepared for the next round. She’d planned the proof of concept to be two control pulls, then four lubed pulls but by the time the balloon was pulled through her a third time she was about beat. It was the first lubed round and that helped a lot, but even Mark noticed her cervix was remaining more and more open with each round. After the fourth pull of the planned six Arianna called it quits. She handed Mark her phone and asked for some pictures before he removed the speculum. Arianna almost cried when she saw how beat up her hole looked.
Mark got her back off the table and they started cleaning up. Mark reached for his boxers but was stopped by Arianna. She guided him back to the floor till he was laying on his back facing up. Arianna grabbed one of the lubricant bottles and applied a couple drops to Mark’s cock. She mounted him and began rubbing his shaft against her lips. Mark loved the feeling and he was hard almost instantly. He reached up and began massaging her big saggy breast.
Mark was a little gentler this time since he was worried about what she’d just put herself through. This is why he was surprised when she lifted herself up and guided Mark’s erection into her sopping wet pussy. She lowered herself down, inch by inch and Mark reveled in the feeling of her cunt. She was tight but so wet that he slid right in. He realized that if he hadn't already cum that night he’d have lost it by now. She somehow still looked so young and innocent as she bounced up and down on his cock.
After a little thought and a lot of horniness, Mark decided that she was ready for a bit of roughness. He adjusted his grip on her tits so his thumbs wrapped underneath them and the rest of his fingers were visible to both of them. He then pushed the two breasts together and squeezed hard. Arianna let out a moan as she stared at her flesh popping out between Mark's fingers.
He pulled them down towards his face forcing Arianna to lean way forward. This had the added benefit of putting much of her weight onto her pelvis and clit. She focused on the pleasant rubbing as Mark began sucking on her tiny nipples. Nipple play had never done much for her, but she loved how rough he was being overall. There was one minor issue though, in this new position Arianna could feel his cock brushing against her cervix with each thrust. It was a new experience and wasn’t completely unpleasant for her. As she focused on the slight burning sensation and the amazing feeling of her clit rubbing up against Mark she began to cum. She let out a couple of cries and went limp.
Mark stopped squeezing her tits and took ahold of her. She just smiled and looked at him but didn’t move. Mark was itching to get off and saw this as his best opportunity to really fuck this girl. He rolled over so Arianna was now against the floor. He pinned back her legs and almost laughed at how saggy and flat her tits now looked, still massive but deflated. He pulled his cock almost all the way out of her and jammed it back in. Arianna let out a moan as Mark began pounding into her little frame.
Arianna had been sexually active since high school but this was the first time she really felt like she was being fucked. Penetrative sex was too painful up until this last week, and now she was relishing in the feeling of this man putting everything he had into her. Mark only lasted a couple of minutes before he pulled out and sprayed his load on her tits again. Arianna smiled as she pulled her tits to her mouth and licked them clean.
Mark dismounted and they both got dressed. Arianna was at the door when she turned back to Mark, “Well I think this concludes my proof of concept, if I get approval from my advisor I’ll be running this same experiment on multiple subjects. I’ll probably need a hand with all that.”
Mark couldn’t believe his luck, “Whatever you need, I’m sure I can lend a hand.” She smiled again and left.