Author's note: This is my new story that I've had in mind for a little while now. It will get a bit weird at some points and contain several fetishes. If that's not your thing please skip this story, I will leave a list of what each chapter contains at the bottom so just jump down to see. For those that end up liking this story feel free to message me what you may like to see, I can't cover everything on my own after all. Please remember to leave a review and have a great day everyone. This chapter is rated M for sexual content and language.

Chapter 1: Exposure

Lisa Loud was currently performing tests in her room/lab as she normally was. Today however was a little different because of the nature of her experiments. For a couple weeks now the little genius was trying to find a way to give mammals the ability to breed even if there were only members of the same gender present. In nature this ability was called sequential hermaphroditism and was common among many species of fish, and invertebrates.

This process was part of the life cycle for many of these organisms and could be as simple as female to male and vice versa, or as complex as female or male to hermaphrodite. Lisa's hypothesis was that if she could figure out a way for mammals to develop this ability then several endangered species could more easily repopulate their numbers, saving them from extinction.

The hardest part of these experiments was finding a way to stabilize the vitals of the specimen after a change occurred. Perhaps it was due to her small little friends she was using as subjects. In an almost cliché move Lisa started with guinea pigs and when she was finally able to induce a change in one of their anatomy's the poor thing's heart would nearly burst from what she could only deduce as pain from the sudden and drastic changes. They just weren't meant to handle this much strain on their genetics, and it was disheartening to see one of them pass from the experience.

She was not an overly sentimental person but Lisa still disliked the fact that so many of her subjects had died in her experiments. Some of them had extremely adverse reactions to her formulas, displaying mutations she had never intended before passing. One even bloated to an enormous size for a guinea pig before its organs shut down.

But today felt different for Lisa. Last night she let her computer calculate new possible chemical chains to further her research while she got some much-needed sleep. When she awoke the computer had finished as expected but only displayed one possible new formula. After running several simulations through her computer she was astonished to see a potential success rate of 72%. Far higher than any previous simulation.

Of course even if she could get this working properly for the guinea pigs she would still need to isolate the formula in order to prepare it for further changes to be applicable to other species. But this was potentially a major step forward. Lisa could practically smell a Nobel prize already and she couldn't wait to further her research.

Lisa chose the healthiest female of the litter and isolated her from the rest in her own private cage. She had a cage with several females and a cage with several males in order to prevent unwanted breeding. Taking note of its seeming unhappiness from being placed alone before adding the newly synthesized formula into the water bottle. They were social animals and didn't like being alone, one of the reasons why she selected them in the first place. If she induced a successful change it wouldn't take long to see if they could successfully breed.

The selected guinea pig she named Currie started to drink from the altered water while Lisa took note of the time for her records. Lisa made sure to feed and water all of her subjects before leaving to get her own food. While downstairs she was roped into a family excursion for the rest of the day. This was a slight annoyance for her because she wouldn't be present for the duration of the test on Currie, but her cameras would pick it up for review later.

Back in the room Currie drank down almost her entire water bottle as she found it sweet and addictive. It only took a couple hours before the guinea pig awoke in its sleep uncomfortable. She moved around her cage as it felt as through something was squeezing her insides. It was painful at first but after a few moments it dulled into a slight throbbing. Currie may have been just a guinea pig but she was smart enough to know something was wrong with her body, unfortunately for her she passed out before she could realize what it was.

It was nearly seven hours later when Lisa finally made it back to her room. Her family had gone to visit her grandfather and decided to spend most of the day with him. As she started to look over her subjects she took note of the same little things of the untested ones as normal before moving on to her new test subject.

Lisa was worried at first when she saw Currie laying motionless in the middle of her cage fearing she had died as well. She noted that almost the entirety of the water bottle's contents had been drank, she hadn't expected her to drink so much of it so quickly.

Picking up her still thankfully small guinea pig she sighed in relief at her warmth and slight breathing. But Currie was still unresponsive, better than dead Lisa internally told herself. Examining her body Lisa nearly squealed in joy at seeing that she had successfully induced a change in Currie's anatomy without killing her. Upon closer inspection she found that she had induced protogyny (female to male). This was her desired result and she thanked her luck for it working. Now she just needed to fully examine Currie and figure out why she was unresponsive.

Nearly two hours later Lisa had discovered that she had in fact successfully changed Currie sex as she even no longer had her internal female reproductive organs. This was good news because it was entirely possible for her to have only changed the external genitalia of her subject and that would have resulted in an infertile Currie. The guinea pig would have been unable to successfully breed with another female.

She still couldn't wake the poor thing from its slumber, but its vitals were stable for now. Lisa decided that it was getting too late at night to continue the experiment any further, so she will have to pick it up again tomorrow. Placing Currie back in her private cage Lisa took care too make sure the animal was comfortable. This was her first success in this experiment and she wanted to keep Currie happy until she knew for sure everything had worked out in her favor before laying in bed and falling fast asleep.

In the morning Lisa was again pulled from her experiments in order to watch one of Lola's pageants as most of their siblings had already made excuses and her parents decided she would be going with them to support her older sister. So she reluctantly left her experiment to go with her mother and father.

XxX

Lynn Loud was lying when she had told her parents that she had practice today, she just didn't want to go to that silly pageant. Apparently she was the only one who actually lied as Luan went out with her girlfriend and Lincoln went with Clyde and Lucy to meet up with their friend Haiku to do something. Lori and Leni were visiting but out shopping and dragged Luna along for some reason who was also visiting. Lana had no choice in the matter as she always went to Lola's pageants, and Lisa got dragged into it as well. Of course Lily was in tow as she was too small to be left alone.

So Lynn was all alone at home now with nothing to do. If she had to guess she probably had four of five hours to herself. At first she simply enjoyed her privacy as she rarely had it, none of them did with so many in one house. After about half an hour she grew bored and went into the back yard to screw around with a soccer ball but that became boring quickly as well.

Going into the house to make something to eat Lynn noticed Lisa had left a notebook on the dinning room table. She went upstairs after eating a small BLT sandwich she had made to return Lisa's book.

When she entered the room Lynn noticed the three cages against the far wall and the running computer. She didn't know what Lisa had been working on and the cages made her a little curious, so she approached them. Upon seeing that two had multiple guinea pigs but one only had a lone sleeping guinea pig her curiosity drew her to the sleeping animal.

Lynn saw that the other two cages were labeled female and male respectively, but the cage containing the lone animal had a tapped-on paper with the name "Currie" scribbled on it. She didn't know much about science, but she knew enough to know this one was the test subject and the rest were some kind of control group at the moment.

"Well I guess you're a girl. I wonder what Lisa is doing to you guys." She forgot about Lisa's cameras momentarily as she reached into Currie's cage and ran her finger along the length of her back. A small smile crossed her lips as the little creature moved a little at her touch. Unbeknownst to Lynn the animal was finally awakening from her slumber after her abrupt change.

The guinea pig fully awoke at last and started to smell Lynn's hand before disregarding her and moving on to her water bottle. Being asleep for so long had left the animal parched as it began to drink down all of the water left within the bottle. After it finished it began to squeak in annoyance, wanting more water.

"Damn you sure are thirsty huh? I'll get you some more." Lynn turned to see several water bottles set aside and picked a random one out of the stock. Realizing that she hadn't had a drink in a while and figuring water is water Lynn opened the bottle up and drank down its contents before selecting another for her new friend. "Shit that's good water. At least Lisa's taking good care of you guys, but it's a little sweet."

Lynn of course had no idea that she had picked one of the altered water bottles before drinking it. They were only marked with the letters F and N. Of course Lisa knew the F to mean formula water and the N to mean normal water.

Petting Currie goodbye Lynn left the room and made her way into her own to relax. For some reason she was starting to feel tired and wanted to just lay on her bed. Within seconds of sitting on her bed Lynn's head began to ache and throb as what felt like a fever overcame her. She felt lethargic now as well as all she could do was lay back and groan in pain.

Heat began to fill her chest and her palms grew cold and clammy. She broke into a cold sweat before it too turned into a fevered rush of sweat pouring down her body. Lynn felt like her skin was on fire as she forced her tired body to rip her clothes away. Within seconds she was clad only in her bra, panties and socks.

"What the fuck is wrong with me? God my stomach hurts now too." Lynn held her stomach as a rippling pain shot through her. She didn't know that it had already been an hour since she had drank that water but its affects were in full motion now. Lynn cried out in pain as it felt as though something had pinched her most sensitive place.

Lowering her gaze between her modest breasts Lynn was confused as to why her core was so damp now. She was in a shit load of pain yet somehow she was wet. This confusion quickly turned into panic as it seemed as though her clit was being pulled by something. With little to no experience with her own sexuality she moaned at the odd sensation of her bud being stimulated but clenched her teeth as the feeling turned into pain.

"Holy shit what's happening? What was in that fucking water?" Lynn panted between words as she looked in horror at what seemed to be her clit forming a growing tent in her panties. It felt so strange but the sensitivity caused a bit of pleasure with the pain. She now knew something in that water was affecting her, that was the only explanation.

She could only scream when her panties were finally pushed aside by her growth revealing the extent of her body's reaction. Her clit had grown to almost five inches and had thickened considerably. Lynn covered her face in panic and shame as she internally recoiled and called herself a freak of nature. But thankfully the pain started to subside a bit causing her to look back to her growth. She was shocked to see skin stretching along the length of her clit before the tip swelled and took on a shape Lynn had only seen in her rare looks into porn.

"Oh my god!" Lynn screamed as she realized her clit was becoming a cock. It only took a couple minutes before it was fully formed, and Lynn couldn't help but cry as she looked at it. However it wasn't quite done yet as it started to swell again gaining several more inches in length and girth. If Lynn could bring herself to measure it she would find it was now roughly eleven inches long and about four thick. She knew enough from gossip and porn to know that this was large by anyone's standards.

Recovering some of her energy Lynn reached down to feel for any further changes and recoiled when her finger grazed something round and sensitive. She shot upright as she looked down between her legs to see a pair of balls nearly the size of tennis balls had formed as well. Again she cried as she looked over her new appendage.

But as she started to lightly touch her new cock and balls she noticed her thighs were still getting wetter by the moment. Lynn moved her large testicles aside and sighed in relief seeing she still had a vagina hidden behind the new growths on her body. It was a small bright spot in this otherwise world-shattering situation.

Lynn felt her body flush as she realized she was still touching her new appendages. She had never come close to touching a penis before and now she had her own putting most to shame. She lightly gripped the base of her new dick and groaned at the sensation.

"Fuck that's sensitive. What am I supposed to do now?" Lynn was unsure of herself as she started to clumsily stroke up and down her shaft. It felt so strange but at the same time so good. She began to increase her speed and before long her hand was flying up and down her prick.

"Jesus I can barely get my fingers around it." Lynn bit her lip as she lost herself in all the new feelings rushing through her body. She rarely ever masturbated before but this felt incredible. On one particular stroke she squeezed the base tightly before running her hand along the length in a vice grip. Now Lynn was moaning loudly as she fell fully into the depravity of the situation.

She brought her free hand down to knead her balls as her stroking increased in speed and intensity. Only one could fit in her comparatively small hand but rolling it between her fingers felt amazing. Her chest was heaving as she struggled to control her breathing and her nipples poked through her bra in an uncomfortable way. Tearing the offending garment away before quickly resuming her masturbation Lynn smiled at the relief of being free of it.

Now she was looking directly at the head of her cock as she stroked it and noticed the fluid leaking from its tip. Lynn dabbed a bit onto her finger and brought it closer to her face for inspection. She of course knew of precum thanks to health class but it still intrigued her. Surprising herself Lynn brought her finger to her mouth and let her tongue taste the strange liquid. It had a bit of a salty taste but she found that she liked it.

A perverse smile crossed her lips as Lynn decided to see if her years of gymnastics could help in her current activity. She leaned as far down as she could and gasped as the head of her dick grazed her chin. She still didn't know exactly what she was going to do in this position but the smell coming off her cock was making her lightheaded.

That's when her memory kicked in and she realized she was flexible enough to experiment with something she had seen in one of her porn videos. In it the girl took the man's thing into her mouth, and the man seemed to really like it. She didn't have a partner but she didn't need one.

Lynn's tongue fell from her mouth and she moaned lowly as it grazed the tip. It felt so good and she wanted more so she began to run her tongue around the head of her own dick. That thought made Lynn giggle a little internally at its absurdity. She found she loved the taste of herself, because her growth was so new it was clean and tasted only a little bitter. She wanted more though so she pushed herself down further to better reach her cock. Now she was sure that if she wanted to she could take about half of her length into her mouth.

"Fuck it, I'm already here." And with that Lynn opened her mouth and took the head in. Her scent filled her nose and she groaned causing a vibration to ripple through her cock. Lynn's eyes began to roll into the back of her head as she took more and more of her own dick into her mouth. As it touched the back of her throat she gagged a little.

After letting herself get used to the feeling of having her mouth so full and figuring out how to breath through her nostrils while doing this Lynn began to bob her head along her own length. Her eyes were now glazed over and her toes started to curl as she lost herself in the pleasure. Before too long a strange tightness formed in her balls and the muscles in her thighs began to strain signaling what was to come. She had no idea what this feeling was but Lynn wanted it to last forever. Never had she felt so much pleasure and she loved it.

Her eyes shot open in shock when the first blast hit her throat. She realized she was cumming and the thick fluid quickly filled her mouth. To stop herself from choking Lynn pulled off her cock just in time to receive a massive load directly in the face. She couldn't react fast enough before a third shot covered her face as well. Finally falling back away from the blasts Lynn's seed shot instead into the air before falling back onto her stomach and even reaching the bottom of her breasts.

"Fuck that was a lot." Lynn could barely open her eyes and when she looked to her side to see her reflection in the mirror she moaned at the sight. Her entire face was painted white in thick semen and her cock was still spewing small globs onto her. That's when she heard the front door slam shut.

"Hello? We're back!" Her father called out through the house. Lisa would be with him too. Now that Lynn had a release of sorts her mind was a little clearer.

"I need to talk to Lisa. But first I really need to clean up, fucking Christ that was so much."

Author's note extended: As stated in the first note this is the list of the contents in this chapter that may turn people off: Futa growth, futa, and autofellatio. If that's not ok with you please skip this story and have a great day. For those of you who read this, thank you and I hope you enjoyed it. Please remember to leave a review and feel free to message me with any requests for future chapters in this story.