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Riko, was recently asked to participate in another crazy experiment, this time with tentacles. Riko being the crazy cat she is, never turning down an opportunity, took the offer.

She showed up at the lab which liked more like a doctor's office and headed inside. The nurse at the front desk lead her into the back where she was stripped of her clothes and made to sign some papers because of course, there are always papers.

She was handed a ball, it looked to be an egg about the size of an orange, as soon as she grabbed it, the egg started vibrating, and rapidly changing it's speed. It was powerful and shaking her entire hand. It was explained to her that they had a tentacle monster in great need of reproducing and these will help their spawn grow faster.

She put the egg down and followed along to the next room.

Riko walked in and looked around, it was a large white, brightly lit room with a single chair in the middle. The chair had stirrups for holding your legs apart and looked to recline back pretty far. Above the chair there was a closed door in the ceiling and many various pipes and electrical lines.

One side of the room was mostly covered by a large window with an observation area.

There were 2 assistants standing by her, a small white bunny and a larger red fox, both dressed in lab coats.

The nurse showed her in where the assistants took over. They helped her up onto the chair. They reclined the chair almost laying down, hanging her balls off the end. They raised each leg into the stirrups and strapped them in, slightly bending her knees for optimal comfort. Next they strapped her arms down to the arm rests. They pulled out a wide leather strap and ran it across her chest pushing it up under her breasts and securing it to the chair preventing her from sitting up.

She kept noticing the female assistant glancing at her package, amazed at it's size even tho she wasn't even aroused yet.

None the less it made her feel good knowing she was being admired.

The fox left the room as the rabbit took some measurements. She put on a long glove and started to feel around Riko's balls and shaft. She tried to wrap her hands around Riko's cock but was unable to make her fingers meet. She took some more measurements of her stomach and balls. And then proceeded to lube up her gloved arm. She began to press around Riko's vagina running her hand through her creases. She straightened her arm out and started to penetrate, feeling every fold and crevasse. She pushed in up to her elbow and moved her hand around a bit. Feeling her womb, pressing in further into she was up to her shoulder only just reaching the back of Riko's womb. This is quite an unorthodox method of measuring me Riko said as the bunny pulled her arm out. The bunny just smiled and turned back to her clipboard and said, you've got plenty of space this will be fun.

The fox came back shortly after with a large container on a cart. It looked to be full of the egg shaped vibrators she saw before but these were attached together on a long cable spaced a few inches apart and we're not vibrating.

They were submerged in a thick goo the fox explained it was a lubricant and aphrodisiac designed to transmit the vibrations more effectively.

We need to insert these so we can later stimulate the eggs' growth he said.

The fox lifted Riko's hefty balls out of the way exposing her tail hole as the bunny picked up the first egg and pressed it against the opening. It resisted at first but soon slipped in thanks to the thick goo covering it. The next eggs went in easier, one at a time the rhythmic stretching of her tail hole starting to arouse her, her cock starting to grow and stand straight up.

Each egg forcing the previous one in further.

After about 20 eggs were inserted the assistants switched places, the tiny hands of the rabbit pressing deep into her heavy balls as she drooled a little while kneading them in her fingers. She counted another 30 eggs as her stomach bulged out, lumps in her normally toned abdomen started to show the eggs within.

The last egg was a fair bit larger and was shaped like a plug. There was a tube sticking out of it and the cable continued through it and into some instruments on the cart. It took a bit more force but it slipped into place with a pop as her tail hole stretched wide around it and then snapped down onto the plug, sealed but unable to close completely.

The fox grabbed a large syringe at least as big as his forearm and filled it with the leftover goo in the container, he connected it to the tube on the plug and started pushing on the plunger, sending the fluid into her butt. He filled up the syringe two more times emptying the container out. Her stomach rounding out so the lumps were no longer visible

The rabbit let down Riko's balls, and walked over to the cart. We will now test the stimulating eggs, she said as she flipped a few switches. Slowly, Riko could feel the eggs inside her start to move, vibrating against each other. Not very intense, but get whole belly was shaking from the quantity of the eggs.

Riko started leaking pre from her cock as her arousal grew.

Almost as if on cue, right before she hit her limit the eggs were turned off, her cock quivering, begging for release, and that was just the beginning.

That's when the doctor walked in. The assistants shared their progress with the doctor and left the room.

The doctor walked over, inspecting Riko, pressing his gloves hands into her stomach, feeling the eggs, checking their placement as he kneaded her flesh.

He mentioned that the procedure will be starting soon and she should try and relax.

The doctor left the room and joined the others in the observation room.

Over the loud speaker Riko heard the doctor say we're releasing the tentacle as the door in the ceiling opened up and a single small blue slimy tentacle reached through.

It seemed to feel it's way around eventually finding Riko in the chair, rubbing all around her body. It prodded at various spots almost sniffing her as it homed in on her leaking cock, wrapping around it squeezing tightly, seemingly soaking in her fluids.

Riko welcomed the tentacle playing with her cock, as she descended further into heat.

Another tentacle sensing this, descended from the ceiling it was a bit larger then the first and had large bumps along it's length.

It followed the first tentacle down and skillfully found her vagina, smelling the sweet musk of arousal from within. It dove inside the wet hole with no regard for if she was ready or not. Thrusting in and out rapidly, the bumps along it's length rubbing along her folds.

The tentacle holding her cock applied great pressure and squeezed in unison with the one in her pussy.

Soon smaller tendrils descended from the ceiling and latched onto her breasts, quickly flicking around locating her nipples.

Gently squeezing her breasts, were they checking for something? She wasn't pregnant so she wasn't producing any milk.

The 2 thin tentacles started pushing into her nipples spreading them open during their way inside. It didn't hurt, in fact it felt good. The tentacles continued to push more of themselves inside her breasts exploring every milk duct and passage.

They stopped moving and she could feel a warmth spreading throughout her breasts as they started to grow, the tentacles pumping in a fluid to trigger her production. What looked like almost a gallon later her breasts had doubled in size and were starting to leak a white fluid as the tentacles retreated from her nipples to massaging them from the outside.

Riko finally hit her limit, her cock throbbing, balls contracting as she ran head first into an orgasm.

Thick ropes of cum bulged out her urethra and shot into the air, hitting the tentacles, lights and even the ceiling. Each tentacle struck by the cum appeared to react to it, swelling up and absorbing the cum through it's.. skin?

A new tentacle descended, this one looked slim but powerful and was thicker at the tip, somewhat see through and had a large opening that flared wider still as it seemed to sniff at her cock, the opening was dripping a milky fluid and she could see the inside was covered in smaller tentacles and bumps. The tentacle rubbing her cock slowed down and pulled her cock straight up, guiding it into the opening in the curious tentacle.

It was a bit of a tight fit for Riko but the tentacle descended all the way onto her length in one slow push. The smaller tentacles inside wiggling around, feeling their intruder.

The tentacle sucked and squeezed her cock in a rhythmic fashion, pulsing and twisting.

She came again, shooting thick globs of cum directly into the tentacle. The tentacle bulged out from her cum and swelled around her member as it sucked harder drawing her cum up into itself as she watched it disappearing into the ceiling.

Her breasts were getting hotter, her nipples were aching, whatever the tentacles injected them with was causing her breasts to grow on their own now, swelling even larger, getting heavier and heavier as they expanded outwards. Her nipples leaking more and more milk as her production increased, seemingly affected by her own arousal.

The tentacles continued massaging her breasts and sucking on her cock for some time until another descended from the ceiling and went straight for her mouth. It pushed inside and started to force it's way down her throat but just as her gag reflex was about to kick in it pulled out a bit and stayed in her mouth. The tentacle began to release a thick sweet tasting liquid which Riko happily gulped down as much as she could. Swallow after swallow filling her stomach with the thick nutritious fluid.

Suddenly Riko felt something press against her cock, forcing her cum slit open. She looked down at her cock and noticed a smaller tentacle inside the one latched onto her member and it was entering her urethra.

With her arms strapped down she couldn't do anything but let the tentacles have their way with her. She didn't necessarily mind, if her hands were free she would probably be stroking her cock and helping the tentacles rubbing her breasts right now.

The tentacle pushed further down her well lubricated cum tube deeper and deeper as it traveled up through her prostate rubbing against it as it made it's way in. Over 2 feet of tentacle had entered her urethra by now as she felt it move through her plumbing and end up in her balls, the tentacle swelling a bit as it absorbed some of her cum directly from the source.

Riko noticed something slowly moving down the tentacle attached to her cock, it was an egg about the size of a cherry.

She watched it descend inside the nested tentacles until it stopped, pressed up against her cock. The tentacle squeezed harder until it the egg slipped inside. The egg clearly visible bulging out her urethra with the shape of a small ball as it moved down to the base of her cock and disappearing inside. As the egg pressed up against her prostate it sent an explosion of pleasure rippling through her before depositing into her sac.

As soon as that egg landed she watched as a whole line of eggs soon followed. One after another the eggs entered her urethra, bulging her cum tube with several eggs at once. Egg after egg passing through her prostate and dropping into her sac causing Riko a mini orgasm in itself. As more eggs descended from the ceiling she felt her balls getting heavier and heavier as more eggs were laid in her sac.

The tentacle continued to lay more eggs into her as there was no sign of slowing down. Her sac stretched with the extra contents, bulging out uneven and lumpy. Riko tried to cum but found she was unable with the eggs blocking her as the extra cum built up in her balls.

Despite her ass full of vibrators and stomach full of sweet liquid she was enjoying the fullness of her balls and the constant attention her cock was getting. The tentacle in her pussy continuing to thrust in rhythm.

Her balls were getting really full now as the tentacle continued to lay more eggs, already having laid over 100, her balls stretching over a foot wide.

More tentacles dropped out of the ceiling and latched onto her nipples, sucking drawing out her fresh milk, giving her breasts some much needed relief from their own swelling growth as they were being drained just enough to stop swelling further.

Yet another tentacle appeared it was much larger then the first at almost 4 inches in diameter. Its tip had a large opening and was covered in small pointy studs all down it's length.

It followed the other tentacle to her lower lips and pressed into her, spreading her pussy sure wide open. Riko could feel every bump on the surface of the tentacle as it pushed it's way into her womb and flared it's end open, locking it and the smaller tentacle in place.

Large baseball sized eggs began to flow down the length of the larger tentacle. They stopped when they reached her pussy, the extra resistance causing the eggs to bunch up inside the tentacle as they pushed against her opening. The large tentacle squeezed tighter pressing harder until her, the other tentacles bore down on her all squeezing harder. Her cock felt like it was being gripped by an Olympic athlete while still more eggs were forced into it.

The first large egg slipped inside her, quickly followed by several others as her resistance had been breached. The sudden inrush of eggs jolted into her womb shifting around and creating new larger lumps visible through her stomach.

After the first rush of at least half a dozen eggs the flow slowed down back to about a new egg every few seconds.

After swallowing at least a gallon of the sweet tentacle fluid Riko felt the tentacle in her mouth pulling out as she instinctively sucked harder on it trying to prevent it from leaving but ultimately unable to stop it. She wanted to drink more from the tentacle, the sweet fluid filling her stomach coating her throat.

She could feel her balls touching the cold floor below her as they hung heavily, stuffed with eggs, and more still being laid.

They had to be over 4 feet in diameter of they were touching the floor she thought to herself, how many more is it going to lay? At this rate even now I won't be able to walk.

Hundreds of little bumps could be seen pressing through her flesh from within her stuffed sac as the egg stretched her out.

Every egg that entered her causing a mini orgasm all building up towards a much larger one.

Her stomach now even more lumpy then before. Rising larger, pressing her breasts out of the way and up by her face as the tentacles continued to lay eggs in her.

The smaller tentacle in her pussy started pulsing as she felt it begin to cum, filling in the space between the eggs with hot cum.

Both egg laying tentacles continued to force eggs inside her despite her balls already sprawled out across the floor at least 6 feet in diameter and get womb pushing her stomach close to 8 bumpy feet as she spilled over the armrests and bumped the hanging lights above her.

She forgot about counting but she looked like she had over 500 eggs in her belly, and many more in her balls. As the smaller tentacle filled her womb with cum her stomach started to round out more and the lumps started to disappear as the fluid filled every gap.

As the egg laying continued only slightly slowing down more tentacles emerged from the ceiling and found their way down to Riko, wrapping around her and pressing into her belly, shifting the eggs around inside her, Massaging her taught flesh.

The room was a flurry of tentacle activity all with the goal of forcing Riko to breed as many tentacles as is possible.

Another tentacle found it's way into her month and started to secrete the same sweet fluid she couldn't get enough of before, another tentacle soon followed but pressed further down her throat and started releasing the fluid directly into her stomach.

As if she couldn't get enough one by one she started to feel the vibrator eggs coming alive inside her ass. Starting at the plug and each one along the chain turning on in succession.

The the tentacles clamped down on her cock and breasts twice as hard as her entire belly started to vibrate weakly at first but quickly picking up intensity. Each vibrator hummed at a different frequency from the next causing a spectrum of different intensity patterns to ravage her. The ever changing vibrations was only intensifying her sensations, but also seemed to affect the tentacles.

The egg laying tentacles sped up, pushing twice as many eggs into her. The tentacle still cumming in her seemed to increase in output as well, the extra rush of eggs and cum causing a surge in her growth fueled by the vibrations.

Riko moaned as unstoppable waves of pleasure overloaded every one of her senses. Her prostate, vagina, vans and belly all aching green the constant stimulation and fullness as she laid there bloated but happy.

The flow of eggs soon died down as the tentacles own movements lacked the same enthusiasm as they one did. Obviously the tentacles were running out of stamina as they completed their objective.

The tentacles started to retreat from her body starting with the thin one in her urethra, sliding out followed by an eruption of cum as soon as she was able to cum. The other tentacles quickly followed suit, the ones in her throat and mouth and then the two in her vagina, leaving her pussy gaping open with a gush of cum but an egg quickly stopped her up unable to release any further.

The tentacles around her cock and nipples remained in place continuing to milk her, sucking up her cum and draining her breasts.

Her stomach a gravid 12 feet in diameter, a mostly lumpy mass cushioned with cum, overflowing the chair but thanks to the eggs she kept her pregnant shape.

Her balls were stuffed to an enormous 6 foot diameter, filled with tens of thousands of small eggs, her own cum filling the voids between them.

As her stomach continued to vibrate from the eggs in her ass she delved into a series of uncontrollable orgasms, as a constant stream of cum shot out of her cock and fed the tentacle. Her breasts increased production again, trying to match the size of her litter. The milking tentacles couldn't keep up as her breasts started to swell once again.

She laid there for several hours like this, lost in the pleasure of being filled with uncountable eggs soon to hatch. The remaining tentacles feeding off her fluids and ensuring their breeding queen is as comfortable as possible.

As she laid there she slowly started to grow bigger and bigger as the eggs inside her grew in size ever so sightly.

Around the 4 hour mark the vibrators were turned off and her whole body came to a rest for the first time in hours with only the gentle sucking of her nipples and massaging of her cock remaining, but it didn't last long.

Riko could feel something starting to move in her belly, it was small at first but quickly grew as more eggs started to hatch. One by one then two, six, 10 eggs at a time started hatching. Little tentacles emerging from their shells inside her.

Soon her entire belly was filled with activity, flurries of movement as the new born tentacles squirmed around violently looking for an escape. Riko liked down at her stomach only to see hundreds of bumps moving around inside rubbing against each other and tickling her womb. She's never felt anything like this before and she didn't want it to end.

The eggs in her balls were next as they started to hatch, smaller tentacles were pouring out of the eggs into her balls.

The tentacle over her cock finally let go as she started to cum, her balls churning and mixing with the new tentacles as she came. Soon the tentacles were rushing for her exit following the flow of cum sometimes multiple at a time during their way through her prostate and into her urethra. With each spurt of cum it felt like she was cumming marbles, it was an amazing feeling. The pressure inside her womb was growing greater as the tentacles continued to move and grow until they found their way out, her cervix was forced open and a torrent of tentacles and cum flowed out of her, each one can't like she was birthing a softball. Her stomach and balls shrinking as she birthed her first brood.

Thousands of little tentacles spreading out across the floor of the lab. Some slithered up and started to suck on her breasts while others continued to wriggle around on the floor.

Riko never knew the feeling of giving birth to many thousands of tentacles at once could ever be this pleasurable, but eventually it came to an end. Her belly had shrunk back to it's normal size, or at least normal for her, with a whole chain of vibrators still stuffed in her ass.

Her balls had drained all they could as they returned to their normal grapefruit size. She felt empty, but satisfied.

Some time later the entrance to the room opened and the assistants entered the room in protective gear. They removed the chain of egg shaped vibrators despite Riko asking if she could keep them, unstrapped her from the chair and helped her up.

After the normal procedures Riko was released and allowed to go home to rest. Her breasts were still full and she was told they may take a while before they returned to normal.

While she was walking home she felt an odd tightness in her pants, she rushed home and took off her pants only to realize her balls had grown twice their normal size and they were moving, it was oddly pleasurable like she was back in the chair.

She felt something begin to move up her urethra, her cock bulged and a tentacle emerged from her tip. This one was much larger then the ones she birthed, it must have stayed behind and had been growing inside her.

The tentacle retreated back inside where it took residence in her balls, and Riko then realized she had made a new friend, and had a new passenger.