The Transformation of Jenny  Chapter 4: Masturbation Fire
By Selgrin, selgrin@yahoo.com
This is the continuing story about an innocent girl who transforms into a powerful lust storm whenever she gets aroused.


A note to readers: The Transformation of Jenny chapters 1-3 can be found in
Miscellaneous Six in the stories area since I wrote them years ago.

Jenny ran home from school as fast as she could, which was way faster than
normal. Her body was reacting strongly, changing and growing since that film
in the dark classroom. There was no way she could face her peers with her body
the way it was. She knew that the best move was to get out of that school.
Ever since she experimented with her dad's equipment, her body was doing
strange things to her, delivering pleasant sensations, and trying to grow
muscle all day long. Her jean shorts were still tight and uncomfortable, but
torn all the way up both sides allowing freedom of movement for her bulging
thigh muscles and hamstrings. The sleeves and shoulders of her shirt were
pretty much destroyed, revealing sweaty veined muscles up to her lats near her
neck. The torso area of her shirt was forced to slide upwards to attempt to
accomodate and holster her expanded breasts, exposing her sweaty abs as she
ran.

She thought about her house which was about eight blocks up and one over.
Childhood memories of her old friends, their homes, and playing in the area
flooded into her short term memory as if a dam had broken. It surprised her
and she gasped as a detailed strategic map appeared in her head, showing her
the most efficient route to get home. It was complete with blank areas where
she had never been, and faded parts warning of very old memories which might
be different now. The surprise slowed her pace a little as she wondered about
this second-sight map. She pushed off hard to full speed again, sprinting down
the walkway next to the street as a car passed by. One glance instantly
conjured a memory that it was Mr. Holland staring at her with wide eyes. She
had babysat for him years ago. She also saw people up ahead and a guy mowing
the lawn a few houses up. This wasn't good, so she broke left behind a house
to head to her street. She could tell that her feet were in a bit of pain from
the running, but there was no time to worry about that. Jenny was breathing
kind of heavy and sweating, but she wasn't getting tired or winded at all like
she used to. She had no idea that her enhanced lungs were bigger, and now
biologically skewed to absorb oxygen and release carbon dioxide at a more
accelerated rate.

This yard was a blank area on the map, and her way was blocked by a tall metal
fence. "Damnit," she said as her hands gripped the fence and squeezed. The
links bent and bunched up in her hands as she could see her street past this
yard and another fence. She thought about what to do as her muscle-packed
forearms expanded slightly, continuing to add more crushing pressure to the
poor fence. A link snapped apart grabbing her attention for a moment. She
stared at the broken metal link and wondered, "am I strong enough to do this?"
Jenny didn't want to damage property, but getting home to the safety of her
house was paramount in her nervous desperation. She spread her shiny tanned
legs apart and grabbed the fence, hoping she could rip a hole in it. If anyone
was standing behind her, they would've had quite a sight to see. Her jean
shorts were reduced to basically a front and back flap, the latter only
covering part of her musclebound ass. Thickened round leg muscles flexed and
locked her into a stable stance. She began adding pressure to split the fence.
Triceps and the back muscles trying to hide under her shirt bulged and grew as
she continued to add force. Hot charged blood pumped into the muscles calling
for it, and it felt pretty damn good.

Jen was sweating as she snapped another link, but she then felt a new
sensation telling her that she could sweat more if she wanted to. She had some
sort of clumsy control over it, and thought to herself, "sure, why not?". Yet
another different feeling pleased her as her pores exuded little droplets all
over her body. She cooed with delight and noticed a stronger scent of herself,
but the seemingly endless wonders of her body had to wait until she could get
home! As she gripped the fence harder, her feet rose up off of her heels as
calf muscles pulsed outward, rounded and beautiful. She pulled hard, and about
20 fence links popped loudly as she felt her shirt tear part way up her back
to make more room. Jenny darted through the opening and heard dogs barking to
her right. She sprinted double time toward the other fence while she caught
sight of a doberman and a rottweiler speeding toward her angrily. She would
have to jump and climb the next fence very quickly to get away. Launching off
hard with both feet, Jen created deep footprints in the grass as she sailed up
high in the air. Her hands clutched the fence near the top, and bent the links
as she quickly started her climb. The dogs were suddenly silent, and she
turned her head to see what had happened. The two dogs were about ten feet
away, sniffing the air, and looking at her curiously. Jenny kept climbing, but
watched as the dogs sat down, wagged their tails happily, and whimpered at her
like they wanted a treat or something.

She continued on, jumping off from the top of the fence, and landed kicking
off hard at full power. He poor jean shorts weren't designed to handle her
energized legs in full flex, so another serious rip formed in her decimated
shorts at the belt seam. The material held on by a few failing threads, and
she quickly gripped it with one hand before it all came apart. Luckily her own
street was fairly quiet. With a couple of covert movements, she was able to
sprint all the way home, and was pretty sure she wasn't seen. Holding on to
her shorts at the front door, she reached down for her keys with her free hand
and felt rock hard bulging thigh muscles instead. There were no keys. "Shit,"
she whispered as she tried the knob, which was locked of course. Jenny raised
her head, closed her eyes, and let out a sigh. She had to go for it and
started twisting the doorknob hard. Veins shot out along her arm as she
applied extreme force to the damn knob. After some serious pressure, it made a
sickening metal crunching noise and gave way. She was in! The door slammed
behind her as she ran upstairs to her room, and she closed her door with a
sigh of relief.

The first thing she saw was her full length mirror on the opposite wall at the
foot of her bed. There was someone standing in it that she didn't know. She
stood and stared for a few seconds in disbelief, then very slowly took steps
toward it. Huge cut thigh muscles shined as they pulsed and shifted, pushing
the cloth of her shorts around as she moved each leg. Her calves were wide and
beautiful, flexing and popping veins outward as she took slow steps. Getting
closer to the mirror, she started taking deeper breaths with excitement and
then looked up. The vision she saw was too much, and in surprise she let go of
her shorts which promptly fell to her feet along with her poor shredded
panties. A powerfully muscular ass was revealed, as well as her private area
which had increased in size. She didn't notice any of this yet as she was
focused on the two huge breasts in the mirror. They seemed to be trying hard
to push through her wet, damaged shirt. "Could these really be... me?" she
thought as they magically defied gravity, presenting themselves proudly
forward. Her nipples had grown as well and were trying to break through the
damp fabric. Jenny's first instinct was to feel them to prove that what she
was seeing was real, but the mirror was reflecting a full-body image that was
too hard to believe. Jen tried to remember the botched lab experiment where
she briefly became a fitness model, however this girl in the mirror displayed
seriously thick curvy muscles all over her. Mesmerized, she had to get a full
visual of this transformed figure before deciding if she was hallicinating or
not. As she breathed somewhat heavily, her new rack moved forward and slightly
up and down. Her stomach caught her attention in the mirror for a moment as
her breathing caused light to dance off of her sweaty pulsing abs. It was a
wonderful feminine six pack, yet packing an extra strong punch.

She dared to look at her face now, witnessed pure beauty, and what she saw
made her hold her breath. Jenny normally had pale green eyes. This creature in
the mirror had some sort of bright blue, yet an almost purplish shade. It was
a color that was hard to describe as there seemed to be several different
colors present. Her beautiful eyes shined in the light with an almost
fluorescent quality. Her face was a little wider now with a smooth tan
complexion. The image she saw was exciting. She turned her head a little to
see better, and noticed that her jaw and cheekbones were slightly more
pronounced. She looked more adult now, maybe in her twenties, but it was also
hard to judge. She gently placed her hands on her face for inspection, then
noticed the action caused huge biceps to flex and expand proudly against the
sides of her swelled breasts. She moved her head down to look at her arms,
causing some long thick locks of curly reddish hair to fall forward, partially
covering them up. She spent a quick moment to feel and admire the silky
thickness of her nearly waist-length hair as she stared up at the mirror. That
was when she caught sight of her altered private area. She stepped back
nervously, saying, "Oh no, there too?" Destroyed jean shorts and panties were
left behind and forgotten as the steps she took finally alerted her to the
fact that her feet were in a little bit of pain. During the run home she had
noticed this slightly, but it was a desperate event and she had other
priorities. Her sneakers were still on, but her feet had expanded slightly,
pushing the tough fabric to the limit. With some effort, she was able to
remove her shoes and socks, and saw that her feet were indeed slightly bigger
and veiny. "Thank god I don't become bigfoot!" she thought.

She took another step towards the mirror and spotted her strange vagina. This
was making her nervous so she avoided it for now. Her ripped shirt wasn't
doing anything for her torso, arms and shoulders anymore as the torn cloth
adjusted itself to try to caress and hold her pumped breasts. She decided to
cross her arms to feel her well-rounded shoulders, and then slid her hands
down to her swollen biceps and triceps. There was definitely a difference
between her large graceful feminine muscles and a guy's clunkier muscles. She
grabbed on and flexed, pushing her hands open. She did it again and accidently
flexed her somewhat hidden pecks as well. Her massive mammaries shot forward,
upward, and sort of jiggled lightly. She caught this in the mirror, and the
sight of it made her laugh briefly then stop. She wanted to stay serious, but
was still smiling and tried it again. The boob-jut-jiggle motion repeated, and
she giggled for a little bit. It was all still crazy, but she was starting to
feel more comfortable with her new form, and she noticed her attitude was much
more confident.

With a little sigh she said, "O.K., back to business." She wondered about this
new energized form and what it might be able to do. "Exactly how strong am I?"
she mused. Glancing around the room quickly, she spotted a can of soda that
she didn't drink last night. She walked over to the dresser and grabbed it. It
sure felt better to be walking barefoot on carpet now. Bringing the unopened
can to the middle of the room, she started squeezing it with one hand. She
said, "Now If I can crush this, that would be ridiculous. Pretty much the only
way I've seen it happen is running it over with a car." She steadily increased
the force as extra veins began showing themselves along her forearm. Jenny
felt the hot energized blood entering all of her forearm muscles as they began
vibrating and bulging outward a little more. The top and bottom of the can
ballooned outward, making a noise. A couple seconds went by while she felt and
watched her forearm veins pulsing, and could tell that extra power was now
available. She bit down showing her teeth, and stared at the can angrily.
Great strength was applied, and her hand and soda can started shaking. She
said, "Well, I guess it..." Then the can exploded violently, spraying soda all
over her, most of the room, and her mirror. Jen just stood there covered in
soda for a moment; the can shreds falling to the carpet. Her shoulders were
hunched, eyes firmly shut, a weird sneer on her face and she was still holding
her arm out. All she could think to say was, "Alrighty then!"

Gracefully, she strolled over the moist carpet to the wet mirror again,
watching her interesting leg muscles move and adjust. Soda dripped off her
face down to her stomach and legs. It was pretty refreshing actually, and she
proceeded to try to brush some of it off of her abs. It was so weird feeling
these hard shapes all over her. Even though she wasn't going to get any more
soda off of her, she kept rubbing and feeling around the bumps and valleys of
her abs. It was a diet soda, so it didn't get too sticky. Her abs felt nice,
and she gave her tummy a few light scratches, making her smile.

She moved her hands down to the front of her thighs to swat some soda away.
Her fingers flicked and rubbed, making circuits along her cut form. Then she
started touching her muscles very lightly with just her fingertips. This felt
quite special as she explored delicately. Her breathing was increasing again,
and instinct told her to move her feet a little further apart so she could
caress her inner thigh muscles as well. Sliding her fingertips around that
region caused a quite pleasant reaction, and her vagina started reporting to
her brain that it was very happy. Thigh muscles flexed and pulsed a couple
times on their own, out of her control. "Mmh... Mmmhh... what the?" The inner
thigh muscles close to her private area were so strong and swollen, they were
able to lightly touch and graze a part of her privates when they flexed. The
resulting pleasure generally came from that whole area, but seemed focused on
her pussy.

She stopped touching and finally started examining her new organ down there.
She couldn't see much standing there, so she headed for her bed while taking
her soaked shirt off quickly. Wet cloth sliding over her nipples gave her
another little jolt of pleasure that seemed to connect her breasts to her
private area for a second. "Unh..." she froze for a moment to think, while her
eyes moved around the room and back to her bed. She sat down on her bed
completely naked now, leaned back on her pillows and put her knees up.

Jenny really had to see what was happening, so she bent her head and back
forward to try to look down her body. Her mouth opened with a little gasp as
she was caught off guard by the view. Those amazing new breasts were less than
an inch away from her lips, and were obstructing most of her downward vision.
They were firm, shot straight outward, and her little nipples had grown large
and quite erect. The shiny mounds wobbled ever so slightly as they rose and
fell when she breathed sharply. Craning her neck a little further, she
marveled at those abs and how they changed when she tightened her stomach. Her
hips were wider, and packed with muscles. She could tell that the center of
her body lifted off the bed somewhat, as her powerfully rounded ass refused to
give way.

Both hands slid down along her sides since she wanted to feel her ass to find
out how it was, but her eyes were locked onto her pussy now, and she couldn't
stop staring. What used to be a little slit had morphed into a display of
several different shapes. There were many lips, bumps and holes. She was
intensely focused on it and hoped nothing was broken or anything. Everything
down there was wet and glistening. "It's so different." Jenny couldn't quite
see everything down there from her vantage point. From the way she was
sitting, her pumped inner thigh muscles were so strong that they had expanded
partially into that area, trying to find available room. She'd have to move
and pull things a little to see if anything else down lower had changed. Even
though she knew her mom or anyone else wasn't home, instinct brought her head
up to glance around the room and at the door, since this was high on mom's
list of severe punishment 'no-no's.' She had trouble believing that other
mothers were so strict.

Safe, she decided to lay a finger on the hole part carefully, and figured
she'd tug on it to see further down past the muscles. She started reaching
down and then paused when she saw her hand. It was definitely a bit larger,
with veins flowing down and along a muscle-packed forearm. Her glowing body
was quite alien to her, and she had to worry a little about what she actually
did to herself with her dad's machine. Her other hand ran along the left side
of her body subconcoiusly, from her ass up to the side of her swollen titty.
Her eyes fixated on her powerful arm, and she was momentarily blown away again
as she thought, "Is this all really me? Am I stuck like this or will it fade
away again?" She turned her hand over, made a fist towards her face, and
looked again with wonder as her whole arm expanded with veins and curvy female
muscles. She was concerned and a bit scared by all of this. She thought to
herself, "I wanted some small muscles, and now everything that is me is so
powerful. These weird new sensations are amazing, and I feel fantastic. I
think I really like this." Her hand continued down.

The instant her finger made contact with the hot flesh it pulsed lightly with
a pleasant feeling. "Ohhh..." Consumed with the oddities and pleasures of her
body, she didn't realize she had made any noise. The exploration mission was
also completely wiped from memory as this was way, way more interesting. She
felt a hot liquid rise up from the hole and warm her finger, surprising her. A
little worried, she watched the juices pool in that spot, and continue to rise
slowly. Rubbing her finger and thumb together, it was like hot baby oil. She
thought, "What is this? Am I alright?" The hot liquid appeared mostly clear
with a touch of cream. Her special place was nearly filled with the stuff and
it had to leak forward as there was no more room. A little hot oil started
slipping down over her asshole. "OH! Mmhhh... wow." This was a new and strange
feeling but she was willing to accept it just fine. Her finger started moving
up and down the fleshy area just above her hole. The feeling was strong and it
reminded her that she had done something like this before. She remembered a
time some months ago when she was fumbling around with that area, and that It
felt kinda funny and good in a weird way. She had goofed around like this
several times during some hot bubble baths. It felt good and strange, but she
never got further than some pleasant rubbings. One time her mom walked in and
saw her fiddling around. She said, "Never do that, It's not healthy for a girl
to be doing that!" Poor Jenny was shocked, not understanding her mom but
assumed it was some kind of health thing. Jenny became timid about it, but
still felt around once in a while.

However, this time her vagina was in full blossom mode, actually far more than
full, thanks to her accelerated condition. She didn't have a chance. Inner
thigh muscles started pulsing, strong and cut with a few veins. Her up and
down finger motion graduated to a more circular motion as she subconciously
paid attention to the lower lips near her hole. A second finger was added.
"Ungh... Uhhh... Uhhh..." Unable to focus or think any longer, she gently
leaned back and laid her head on her pillow. Her eyes glazed over as she
stared upward at nothing. Her sweaty legs were moving around, sliding against
the soft sheets. Strong calf muscles were pulsing and flexing. Her feet didn't
know where they should be. As she continued the circles she started hitting
the hole more often, and copious amounts of pussy juice started spreading
around to all areas being touched and beyond. "Oh my god!" she blurted out,
"This is too good! UNNghhh... UUhhh..." Her arms were ripped. Strong tan
biceps and triceps flexed alternately as she desperately worked her special
area.

Thoughts of Jeff at school popped into her head. She saw him once in shorts
with no shirt on. At the time she felt so lucky to witness this gorgeous
event, since her semi-friends found some way to sneak into this part of the
gym to goggle. They sort of tricked her to coming with them for a laugh, but
it was at that moment that Jen realized that there was way more to life than
just bullshit and studying. His natural warrior ass and thighs put those
stupid blue gym shorts to shame, as they didn't leave much to the imagination.
His gym shirt had become soaked from his overheated body, so he decided to
reach behind his head and fling the drenched thing off of him. His muscles
were pumped up and glowing, and his hair was wet with sweat. That day, the
memory of it became engraved into her mind fiercely, as if cut in stone, and
she would probably never forget it. As she continued to stimulate her
increasingly sensitive area, her enhanced subconcious locked onto this memory
since it was of paramount importance to her. The sharp memory transposed her
glossed vision and was presented to her, for close inspection of detail. The
moving translucent image of Jeff in tight shorts was next to her on her bed,
and she could almost feel him touching her. For some reason Donna the
volleyball bitch also popped in there briefly, at least her strong ass and
thighs did. Her anger, body and energy was fascinating to her, but she favored
Jeff of course.

The image faded away a little as her free hand was exploring her stomach,
sliding fingers along the hard wet ridges of her abs. Her body was fully
charged now and demanding her attention. Quickly she found her new enormous
breasts, and rubbing them was spectacular. Her hand explored too fast and an
engorged nipple was rubbed hard. "OOOHH!!" Electric charges shot down to her
pussy and back again. Jenny's mind was pretty much useless now, as her whole
body screamed for pleasure. She tried to rub a nipple a second time but it was
too dry and rough. Somehow her fogged brain made her bring her pussy soaked
hand up and smear dripping juices all over both nipples. She sighed with
satisfaction as this action made her nipples grow a little bigger, and deliver
stronger sensations. Huffing and cooing, she flipped over fast and mashed her
large firm mounds into the silk sheeted mattress. "HHHoooo Yeaahhh!...
Uhhhh!... " She slid her engorged breasts up and down the sheet, writhing in
ecstasy. Her muscular ass shot up in the air. Steel thighs and hamstrings were
hard at work pulsing away in order to achieve the body's maximum pleasure. New
strong back muscles were rippling and her powerful triceps pulsed and flexed
as she moved herself back and forth. She kept sliding her sensitive nipples
along the silk, but her neglected vagina quickly complained with an itch that
rose with an intensity that couldn't be stopped.

She flipped over again with ease and sent all of her fingers there
immediately. Digits smashed into all areas with pussy juice flying.
"GGAAAHH!!! ..UUHHH! NGHHH!" This feeling was an overload to her nervous
system and her growing thighs came up quickly to clamp down firmly on her
hands. She screamed out loud as one hand mashed against her almost untouched
clit and two fingers from the other hand got shoved part way into her vagina.
Her muscular thighs wouldn't let go of her hands, and a couple more veins
became visible along her inner and outer thigh muscles as they pulsed
relentlessly to keep the stimulation up. Her body seemed to know itself better
than her mind did. Jenny had a mini false-start orgasm right then. Eyes shut
and mouth wide open, she wrenched her head violently from the left side to the
right on her pillow, and her long curls flipped over, covering most of her
face. The extended pleasure wave forced her to hold her breath while her rock
hard body completely tensed up, and stayed perfectly still and silent for a
few seconds.

It was suddenly over and she moaned loudly as her ripped veiny thighs
continued to clamp down hard on her hands. Her legs rocked back and forth and
were increasing speed. She couldn't ever imagine anything feeling better than
what just happened, but she had no idea that her pussy wasn't anywhere near
done with her yet. As she rocked on her hands, gritting teeth and praying for
release, juices were getting everywhere. Her thighs and ass were getting slick
with the stuff as it ran along the curves and valleys of her cut form. Shiny
strong thigh muscles glistened and started shuddering as her hands made magic.
A pool of her nectar and sweat collected in her belly button and flowed along
the ridges of her pulsing abs. Her muscle-bound thighs finally let up a little
to allow her hands easier access. Long curls of reddish brown hair were
getting stuck and matted to her sweaty come-stained breasts and arms as her
subconcious thought of it's next move. "The hole needs more, the bump needs
more" was the only thought process. Jenny summoned any self control that she
had left, and was just barely able to lift her hands away from that lovely
place. Panting and drooling a little, she looked down at her sopping wet new
toy and noticed that the bump on top had grown. It had expanded past a
protective hood of flesh, and was now about the size of a penny. It was pink,
wet and throbbing. The whole area was that way. "Oh god help me," she mumbled.
The itch was back full throttle.

Through glossy eyes, she noticed her fingers were slightly longer and a little
thicker from the transformation, and in her haze figured that several digits
should do the job. She planted three fingers on her hole and started to push.
It was tight, but there was no shortage of juices as they went in. Multiple
joints and knuckles bumped and side-swiped several sensitive areas inside her.
All she could do was gasp with an open mouth as her eyes rolled back in her
head. Her fingers were in all the way to the knuckles, doused with juice. Her
dripping wet thighs came up and clamped down again. They had no choice as this
was yet another brand new stimulation of her system. Moaning loudly with each
breath, her knees rocked back and forth squeezing her hard. Her inner and
outer thigh muscles pulsed over and over again, forcing her fingers deeper
inside her than she could have achieved on her own. She felt knuckles and
fingers massaging wondrous places inside her that simply didn't exist in her
known universe ten minutes ago. She felt the intensity start spiking again and
begged for it to happen. "Please! Oh god more!!!" Another false-start orgasm
engaged her system, tensed her quiet, racked her body, and with her free hand
she pinched a wet nipple as it was happening.

Her power thighs spread apart again and she knew of nothing but plunging her
fingers deep in that hole. Jen was making alot of noise now, grunting through
clenched teeth, and the sloshing noise of fucking. Her toes clamped up as her
calves flexed, displaying thick beautiful curves. She was hitting the
perimeter of the big bump on top but it gained the itch bad, and her free hand
had to obey. Her fingers were jamming away very quickly now and more juices
were flying as she groaned loudly with pleasure. Her other hand slid past her
huge boobs, down her strong torso, and found it's target. Wet fingertips
sliding over that magic bump were too much, and she gasped in air very loudly.
Her thigh muscles clamped down so hard on her hands that it almost injured
her, and her pleasure of the universe had arrived. All she could do was look
up at the ceiling, mouth open, try to wonder what was happening, and accept it
all. Her whole body left the room, and floated in space... for about 6
seconds.

Violently she was returned to her bed with the first, and most powerful
spasms. "ARRRGNNNHH!!!" "ARRNNHHHH!!" All of her muscles were on overtime. Ass
and thighs tightening, abs crunching. Waves of extreme pleasure smacked her
around her bed as her fingers tried to stay firmly where they had to be. She
pulsed on her fingers over and over again, screaming each time. Juices were
squirting and landing somewhere off the bed. The pulses were finally getting
weaker, but each one was cherished and nothing short of amazing. "OOHhhhh...
Ohhh..." She curled up into a ball of muscle and gently spasmed as her nervous
system tried to figure out what the hell was going on. Jenny carefully removed
her fingers from this amazing new discovery and was lost in the magic of the
whole thing. There was no energy left to even think about anything. She rolled
over, made little humming noises to herself, quickly drifted off to sleep on
her wet sheets, and enjoyed a peaceful dream. Lying naked on her stomach,
musclebound Jenny began to shrink. Her rock-hard ass slowly became small and
soft. Well-defined thighs and hamstrings diminished to small proportions and
shiny strong calves shrunk to a thin state. Her once-strong arms, stomach and
back slowly faded down to a wisp of their former glory. Lying there skinny,
wet and pale, litte Jenny slept peacefully for a couple hours.

To be continued with:

Chapter 5: Vines and Friends

selgrin@yahoo.com Feel free to send me a message. I know this isn't a typical
story, and men will enter her life very soon. Bad or good, your feedback fuels
me onward, thanks!