The Royal Secret part 10: The Experiment

Story by porterjoe on SoFurry

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#10 of Stories of Cabalton

Apparently I get even more sappy when I'm drunk, I might go back and add in some more stuff to the last part later. I'm honoring my drunk promise, and here's the three-way that I kind of felt weird about before. I'm going to upload this first part and add in the actual threeway once I decide what position they should use.

I do think my solution to the size difference works nicely both metaphorically and physically though, so I'm getting more comfortable with Erica participating.

Okay here's my first go at a threesome, it's a lot harder to write than I thought it would be. Let me know if it wasn't really worth the wait, I'll trying to tighten it up a bit as I look for edits and things but suggestions would be helpful.


Arousal permeated the air as the excited trio planned out how to let Rachel experience a more innate method of stimulation from both of her sexes. However, the anticipation had the effect of displaying the actual barrier stopping her from being able to penetrate the curvy, but sadly vaginally-standard, squirrel; Rachel was simply too big when fully erect.

This had the mollifying result of forcing a series of pleasurable delays as they planned, giving Erica the chance to enjoy a richly textured display of their lovemaking. She didn't feel like an outsider between the couple anymore, she felt like an enjoyable addition to their affectionate coitus, and she took the opportunity to try Rachel's no-longer-necessary machine.

In a curious coincidence, this gave her the ability to see the problem from both a literally and figuratively unique point of view. As she sat on the vibrating phallus and watched the mating couple from her elevated position, a potential solution dawned on her. There simply wasn't a way for Rachel to keep herself from getting too aroused while having sex with Phillip, but perhaps a part from the machine could become the very means by which she could experience what it was designed to compensate for...But let's give them a minute to finish this round first, it's getting to the good part now...

"Enjoying your new...oOOH...throne...Erica?" Rachel gasped with a grin as she hugged Phillip tighter with her legs, her testicles bouncing exotically above their joining while they leaned away from each other.

Erica replied with a lewd moan as she held her large breasts in her paws and tweaked her painfully erect nipples. Suffice to say, she was enjoying herself.

"Well...that's settled then," Phillip laughed breathlessly as his member was forced to bend even farther down to hump into the princess. He was at the disadvantage of not being able to cause a similar sensation to Rachel, but made up for it by stroking her glistening, ebony penis all the harder.

"Any...hngh...bets on how...high I'll get this time?" Rachel giggled as she felt her testicles constricting back into her. Her guess was rather high, as they had just taken a break for tea and she could feel her churning sweetness as it started boiling it's way up her shaft.

"Wait...wait a second..." Phillip gasped as he put his paw over her flare and felt an achingly intense pleasure throbbing in his penis. If he watched her splatter the ceiling again, he wasn't going to be able to get flaccid, "Please...you're going to make me cum like before teatime."

Rachel drooled at the thought of their last, or rather second to last, lovemaking session in which a particularly impressive ejaculation had kept Phillip erect again. He had complained a little bit...but having two beautiful girls licking his sore member did have the effect of reducing his whinging. A nice cup of tea afterward had made him even look back on it with a certain fondness.

But the fear of having to have sex again without getting the chance to cuddle with his beautiful princess for a little bit was making him anxious, and Rachel quickly put her paws over his to try to dampen her spurts. It was...enticingly erotic.

Even with their paws held tight over Rachel's practically vibrating flare, jets of her nectarous semen still arced in all directions from between their fingers. They lifted their paws slightly to allow Rachel to ejaculate more freely, sending hot splashes of fluid rebounding over their bodies. If it wasn't for the spectacularly unanticipated nature of the display, Phillip's throbbing erection would have probably continued even after he finished spurting his own.

Phillip fell backwards as he felt Rachel's vagina slow it's rhythmic clenching, forcing her to roll forward and continue spurting into his face. He opened his mouth and savored her honeyed ejaculate, grabbing tenderly at her delicate breasts as they came towards him.

Rachel continued bucking her hips as she rode out her orgasm, becoming quite good at timing it to spurt into his muzzle. He might not have been the most princely in appearance when she was cumming on his face, but she couldn't bear to deny him what he always seemed to look forward to.

As the afterglow set in and Phillip's penis mercifully returned to his sheath, the couple flopped onto the bed to snuggle and lick some of Rachel's fluids from each other.

It was then that the deliriously climaxing squirrel snapped out of her pleasure-wrought fog to tell them her idea, and she regretfully stood up off of the phallus which was all but melting under the heat of her orgasms.

Perhaps if the machine had the ability to display emotion, it would have been uncomfortable anxiousness as the trio rushed to put Erica's idea into action. This machine, or rather one part of it in particular, was going to be put under a rather lot of stress, and it is fortunate that rubberized sleeves with specialized tightening belts do not have the means to object to experiments...

"Okay, how does it feel?" Phillip asked with nervousness uncommon to the times when he was stroking Rachel's erection.

"A bit like someone's hugging me, actually. It's surprisingly nice," Rachel hummed as she tried working a finger under the belted sleeve. She tensed herself to see if it would hurt more, but found that the thick tube holding the base of her penis at a more manageable girth only added a delicate pleasure to the sensation. She tried humping into the air and watched her narrowed member throb up against her stomach, it reminded her of when she first started getting erections.

Back in those days, she was only a still impressive eight inches, but had found little joy playing with herself as someone else might with her gift. She had to experience the strange pulling sensation of her testicles swelling when she began estrus, and she mourned having to start using the device while her teenage companions were off exploring each others' bodies. The only comfort from her isolation was that nobody would have to see her as she wept bitterly in between and often during unhappily climaxing on the machine.

She had been horrified to watch as her first aided orgasm rocketed her fluid over the furniture, bringing only the minimal satisfaction of seeing her penis vanish into the sleeve. Erica had felt her own tears forming as Rachel ran over to her and buried her face in the squirrel's skirts, the weeping princess shivering violently while she apologized over and over for what she was. I'm sorry...I'm sorry...I couldn't stop it...don't tell my father what I did...don't tell him how bad it is...I'm sorry...don't make me do it again...

Erica had been heartbroken as she tried to console the princess, praying anxiously that some day she would enjoy her dual genders. But, every time she had to put the belts up another notch so it wouldn't hurt Rachel as it stroked her, it had sent the princess sobbing again as she waited for the machine to make it go away. You're beautiful, milady, please don't cry...please, how can I make you understand? I'll clean it up right after so you don't have to see it, but it's so beautiful, milady...please, don't cry...

Time and repetition had eventually dulled the pain of self regret, the princess just deciding that she would have to be alone forever. At least she would have Erica to help when it got too bad, and maybe it would be better if the royal line started dying off. At least then, nobody else would have to suffer her humiliation; at least then they might eventually be able to throw away the disgusting masturbation device for good. At least then, nobody else would feel their eye's burn with tears as they watched the uncomfortably tight sleeve pumping over their freakish masculinity.

But now, the sleeve would remain static; a brace against hurting Erica as she was penetrated. There was just one thing to test before Rachel got to feel what it was like to have sex with a female.

"Al-Alright, Erica, you m-make sure to keep a paw on that belt in case it b-backs her up," Phillip was anxiously stuttering with the fear of watching Rachel scream in pain as the sleeve held in her fluids during her orgasm. Maybe this was a bad idea...oh bother...but at least it hadn't taken long to cut the sleeve down to size...And she seemed to be alright for now, so...

"Phillip, I...order you to stop being nervous," Rachel whispered as she held her prince's face in her paws, "I'm not going to do this unless you're excited for me. And I'm not going to be able to cum anyway if I know you're not enjoying it."

Phillip took a breath and forced on a smile, gently winding his tongue over her flare to show he was ready. He was just glad that she couldn't see his vacant sheath as he knelt in front of her, and hoped desperately that Erica wouldn't tell her how he wasn't hard yet. Please, just let this be fun for my princess...please, just let this work.

Phillip took another deep breath through his nose and wrapped his lips around her much smaller penis, his own beginning to emerge as he heard her gasps of delight. With an optimistic smile he began bobbing his head, the reliving taste of lavender trickling into his mouth. He cupped her testicles gently before working his fingers under them to stimulate her clitoris. The princess bucked her hips blissfully as he continued, and he gripped her throbbing member more tightly in his muzzle. Erica admired his skillful technique, the squirrel rubbing her thighs lustily as she watched his cheek bulging out around her flare. She kept a tight hold on the belt securing Rachel's erection, but couldn't resist the desire to begin fingering herself as she watched. She wanted to be good and wet for when the princess had sex with her, and tried to tweak the nub of her clitoris in time with Phillip's bobs.

"This is it!" Rachel yipped as her testicles pushed into her. They felt as big as they usually were, and churned eagerly to unleash her semen.

Phillip popped his mouth off of her flare, and held her paws between his as they stroked her together. Erica snapped out of her masturbation, quickly preparing to unbuckle the sleeve at the first sign of trouble.

However, she needn't have worried, as Rachel screamed not in pain, but in passionate release as she gently spurted over Phillip. The constraints on her penis made her semen come out in delightfully long sprays, although her ejaculation was not as satisfying as when she climaxed at her normal size. Even so, her member throbbed giddily against the sleeve, making squeaky giggles as the leather belt strained to contain her. The pleasure was only increased for all concerned as they watched Rachel's longer than usual orgasm, the promise of their next lovemaking session making tails swish in excitement.

Phillip rubbed his face over her flare as she ejaculated, savoring the rich heat of her saccharin fluids in his fur. His own member throbbed eagerly for his own turn to ejaculate, dancing against his tummy as he thought about watching Rachel bring Erica to orgasm. He could wait for her to recover from her climax before having one of his own, he wanted to fill her as she filled the curvy squirrel.

Rachel lay back much like Phillip had earlier, squeezing her ring as her semen shot up against her breasts. The relaxed angle allowed her to ejaculate more quickly, and she wound her hind paws over each other as her spurts began to slow. They were going to do it, she was going to have sex with her two favorite people at once. The thought almost made her shrinking flaccidity swell back out.

However, she had released herself fully despite her restraints, her testicles pulling the rest of the way inside of her in satisfaction.

"I'm so excited for you, sweetheart," Phillip cooed as he tickled the dainty pads of her hind paws, "Just wait till you feel it, it's like nothing else."

Rachel giggled at his touch and kicked playfully, sending her flaccid member wiggling as it was held out by the sleeve, "I'm looking forward to it too, but I'm always going to love having sex with you more." She unhooked the buckle so they could strap it back on her when she could become aroused again. A quick gush of her semen bubbled out satisfyingly as her flare drew back to rest on her sheath, "I like how big I can get now, it's just not quite the same without it."

Phillip smiled serenely as he continued to play with her hind paws, looking over at Erica who seemed to be climaxing again. That squirrel certainly didn't seem to get tired of sex...hopefully that would stay true for her second threesome in a day.

But for now, it was his and Rachel's turn...

Rachel gently tugged the sleeve tighter against her sheath as her penis began swelling, and she slowly stroked along its length and felt it hardening as it met the resistance of the belted rubber. The princess admired her gently pulsing erection as it straightened and her flare grew solid, giving a few experimental thrusts of her hips to check that it felt the same as before. It did, and it felt good.

Erica was moaning in arousal as she lay against the bed, pillows stacked under her bottom to give Rachel more control over her approach. She spread her legs anxiously as she cupped her generous breasts, trying to remember that this was essentially Rachel's first time, in a way. But the well-endowed princess knew enough about her own feminine sex, and Erica trusted her to screw her properly. Did she ever like the sound of that...

"Okay, sweetheart, whenever you're ready. I'll join in once you've had a chance to try it out." Phillip hugged her from behind and stroked the white fur of her belly.

The view of Erica's dripping opening didn't inspire as much rutting arousal from Rachel as she had anticipated, she was more excited to see what it would be like once Phillip started aiding her thrusts into the buxom squirrel. Still, it's not like her penis wasn't twitching eagerly to get some action as well.

Rachel bent her head back to nuzzle him again before she shimmied forward and pressed her flare against Erica's opening. That did feel rather nice, actually...

She placed her paws on the top of the squirrel's splayed legs and gently worked her hips forward as she leaned into the writhing maidservant, she gasped as she felt Erica's heated sex sliding around her cock, and her hips did a rapid shudder under the stimulation.

"Bloody hell...Erica...you feel...amazing!" Rachel gasped as she tried to continue forward slowly, her eight available inches in front of the sleeve quickly disappearing into Erica's vagina.

"Uhhnnnng...deeper...Rachel," Erica moaned as she felt her walls straining around the princess's member, she had taken a fair share of sizes over the years, and Rachel's penis was definitely near the top in her books. She shuddered as Rachel's median ring popped into her, causing ripples of ecstasy to pulse through her womb. That Imperial Guard's boyfriend had better be packing...

Rachel was already yipping under the stimulation as she leaned on top of the squirrel, arching her tail up and to the side so Phillip could see her dripping vagina and swelling testicles. She began thrusting slowly, the decadent sensation driving her to hilt the sleeve against Erica's labia.

"You feel...like hot cake!" Rachel gasped as she drew back for another thrust, a squelching satisfaction buzzing through her penis, "Like I'm...full of strawberries...What am I saying...?" She whimpered with a blush as she realized what she what she was moaning under the pleasure.

Phillip and Erica giggled at the princess's aroused exclamation, "People say weird things like that, sometimes," Phillip chuckled as he ran his paws over Rachel's bottom, "I believe I said 'I'm going to cream you silly' my first time."

Rachel laughed breathlessly as the heat from her blushing failed to subside, turning into a mind-numbing buzz of sexual warmth, "At least that make...mmm...makes sense, kind of," she gasped as she pumped a little harder, making Erica claw at her breasts.

Phillip stoked her tail comfortingly, "I think what you said was sweet," he smirked as he cradled her fur to his face.

"Fig..figuratively...or...bollocks," Rachel gasped as she felt Erica's vagina contracting around her penis, "Are...are you...cumming already...Erica?" She pushed in the rest of the way to feel the sensual contractions.

Erica couldn't respond as she shuddered under the waves of intimate pleasure, looking down as her clitoris erected before the spasming rhythm sent rushes of heat through her body, "Couldn't...couldn't resist..." she managed to moan as Rachel's flare continued to press against her erogenous spot, "You're quite...a stallion...milady," she heaved as the pulsing slowed and she felt her nectar gushing past Rachel's shaft.

Rachel smirked under a curious pride, and gently twiddled her thumb around Erica's clitoris, using some of the erotic fluids squirting around the sleeve for lubrication, "Now I want you in me, Phillip," She moaned as another tingling buzz rocketed through her shaft, "Make me cum in her..."

Phillip didn't need any more prompting than that, and smoothly guided his penis past the soaked fuzz of Rachel's vulva. He shuddered blissfully as he heard both the princess and her servant moan in approval from the added pressure on their joining. He bucked his hips to make them moan again and feel his testicles bouncing against Rachel's. It still felt a little weird, but in a good way, and he gripped her waist with both paws.

"I don't know if there's...ooh...a name for this," Phillip giggled as he braced his legs, "But I think you'll both like it." He started pushing and pulling on Rachel's hips, forcing her sexes to alternate into their dual mating.

Rachel arched her back and shivered under the incredible stimulus, screaming in lust as her penis and vagina rapidly increased the sexual euphoria beating through her body. She yipped and hiccoughed as she felt an orgasm slingshot through her, yanking her testicles up and crushing her vagina around Phillip.

"It's too hot!" She croaked as she ejaculated furiously against Erica's cervix, "I'm cumming too...AAH...too hard!" There was no way to cope with the amount of pleasure coursing through her, an unstoppable torrent of gripping sensation forcing her to buck back and forth. Each thrust increased the strength of the euphoria, and it only got more intense as she saw the slight bulge of her cock under Erica's fur while gushes of semen sprayed back around the sleeve.

Erica was catapulted into simultaneous orgasms with the almost painful pressure rippling out from her vagina. She humped up into the air without knowing why, her clitoris practically throbbing like her own tiny erection as her nipples squeezed out into needle-like points. She couldn't bear to touch any part of herself, every time she brushed a paw over her sexual areas it sent near-agonizing tingling over her body.

Phillip howled in primal satisfaction at the display, humping into Rachel's continuously squeezing vagina as her testicles swelled back out against his own. She wanted to keep going...what a stallion indeed...

The carnal bliss was too much as he felt his knot scorching with his seed while he ejaculated into Rachel. He couldn't think anymore, it was too intense. No longer tender lovemaking, this was rutting in the most sexually intense way he'd ever experienced.

The princess and her prince leaned forward as they humped into Erica together, the splatters of fluid under their knees making them even more urgent to add to the puddles. Neither of them could stop under the typhoon of arousal swirling against their penises, and even as Erica cried out in orgasm, the couple just continued humping her all the harder until she came again.

Rachel dove her muzzle into the squirrel's breasts, bucking faster to increase the tingling across both sexes as she drooled into Erica's clevage. She licked uncoordinatedly at the flesh of her nipples and the fur of her bosom, desperate to hear her partners moan in climax and feel her own honeyed liquid squirting out of her sexes. There wasn't any oxygen in the room, each breath feeling like it drained her more as she bucked more and more slowly under the waves of throbbing ejaculation from her vagina and penis alike.

Phillip was the first to fall away as another pulsing bulge of his knot made him reflexively buck his hips too far back, but his drained muscles were unable to hold him up any longer. He gasped frantically as his penis continued ejaculating while he tried to get his legs to stretch out, painful cramps in his calves making his toes fan out in protest.

With nothing holding her into Erica, Rachel performed a similar act and fell onto his quivering legs, tugging at the belt around her cock in the need to swell to her full size. Her throbbing erection popped out of the squirrel accompanied by a backed-up waterfall of her semen, but her penis was still aching for easier release. She had to ejaculate normally, it was like there were fire ants crawling up her shaft.

She finally managed to undo the belt and screamed in aroused bliss as her cock tore the rubber around it while it erected to her magnificent length. This finally allowed her semen to gush out in huge, rippling waves that fell onto the couple with violently heavy splatters as it scratched away the burning itch inside her cock.

Sensuous aromas saturated the air even as the trio's fluid saturated the bed and each other alike, Rachel and Phillip playfully aiming their flaccidities about while their final orgasmic spurts gushed out of their buzzing members.

The scene had everybody laughing as Erica shakily rolled forward to cuddle into the drenched pair, forming a pile of nuzzling, giggling bodies as each heaved in air under the long-awaited afterglow. Phillip and Erica snuggled on either side of Rachel, their paws gently tweaking her dainty nipples as she shook with laughter and satisfaction. She reached down to play with her flaccid penis as it trudged back to her sheath, holding it back to massage out some of the ache of her sustained erection.

For it being her first time having sex with a girl, she thought she did rather well...