The Penetration Puzzle

With Kelsey's light still flashing amidst a growing puddle, all were lit green at once and the toys all slowed to a low thrum, Sade treated to the same squirting sensation from the dildo.

"What the- what was that?" She cried, only now noticing the white translucent liquid streaming from Kelsey's chin which looked disconcertingly like spunk. She thought she had felt it spurt in her pussy as well as her ass, but she couldn't be sure, and saw no hint of it between her legs. "Does it taste like... cum?" She asked them, but Kelsey seemed too out of it to answer and Dina used what little movement she was permitted to shrug. Cum from guy to guy tasted different so it was hard to be sure, but she prayed it was just an imitation lubricant. She couldn't will herself to panic, there was nothing they could do about it now.

Before Sade could celebrate her effective orchestration, the motors above hummed back to life, pulling them forward through the corridor on their rails, each of them struggling to keep up on their pointed feet - but even Kelsey managed it this time.

It wasn't much further to where the corridor ended at a plain white wall, but just before it was another white table in the corridor. This one was much larger, filling the space from left to right so there was no way past it, and it was a little higher than before. The metal table legs were positioned between each of the girls, and the tabletop was at an angle towards them, rounded at the edges. As they were pulled towards it, they could see the tabletop wasn't metal, but a thick white padding like in the floor of the first room. Sade was eager to draw some conclusion that might be helpful enough to justify the girl's graciously sparing her a third dildo, but her mind was still recovering and couldn't work quick enough to form words.

Stumblingly reaching the table, the motors didn't cease from pulling them forward; the ropes loosened slightly but the mechanisms still tugged. The table was too high to clamber over, and they weren't afforded enough mobility to jump, so instead their hips smacked into the rounded padded edge of the tabletop, jolting the dildo's inside them to grunts from the three girls. It was a momentary relief to have some weight off their feet as the slack rope was yanked forward, bringing each of the girls bent over the table, flailing until finally the motors stopped and held them in place.

Sade was kicking her small feet, trying to clamber up the table in hope that maybe she could reach up to the rails, but it was no use, and the aspiration did nothing but distract her from the instrument behind them, jutting from the wall on the left on metal arms and taking position unseen above Dina's back. Sharp pincers were slid to the strap of her bikini top, slicing through the fabric with a single snip.

Forced to stare ahead due to the ropes holding her arms, it took Dina a moment to register what had happened before she began to yell into her gag, wriggling and kicking. Frantically trying to warn the other girls but unable to make herself understood, the instrument quietly moved over to her friend beside her, and cut through Sade's red bikini top. The seashells rattled as they slid slightly down the table, but were still pressed in place under Sade's weight.

"It's... cutting the bikinis!" She shrieked incredulously, looking over to Kelsey to caution her as the machine moved again, but worried as Kelsey was, she was too drained to even react as she felt it snip twice - once mid-way down her back then again at the top.

The mechanisms above glided backwards along the rails, reeling in the ropes to yank them up and backwards as the instrument retracted back into the wall. Now they had been made to shuffle back a bit, the section of the corridor with the padded table started sliding to the right, the expanse ahead was replaced with a different corridor, their tops gone with it.

Their hard nipples now exposed to the air, Kelsey groaned at this new form of embarrassment. At least the moving around on the table against the mesh had cleaned up her chest a fair bit, the juices now mostly gone. The girls were always complimenting her sizable tits, each a handful, about twice the size of Dina's, whilst Sade often relented about her own little b-cups. Whilst her friends didn't seem to mind changing in front of one another, Kelsey always went off to another room, and hated the feeling of their envious eyes now on her chest. Yet, it was hard for her eyes not to be drawn to Sade's nipples, which she hadn't known were pierced.

Exhaustedly pulled forwards again on the balls of their feet towards the wall at the far end of the corridor, Sade wracked her brain for what could be coming next. The humiliation of having their tops forcibly removed had renewed her arousal, and the devices inside her seemed to be responding to it, ratcheting up the vibrations until she was infuriatingly finding herself eager for more. She could tell her friends were getting worked up too, now moaning with less inhibition. After all they had seen now, it seemed pointless to deny the pleasure.

Brought closer and closer to the end of the corridor, Sade suddenly felt her rope go a little slack, allowing her to drop fully to her feet. It was such a shock she nearly toppled over, as the mechanism above her ceased at the end of the rail and held her still, while her friends on either side of her continued to be hauled forward, reaching the end where the wall slid aside to reveal the most perplexing sight yet.

"D-Dina?!"

Any notion the girls had that they couldn't be embarrassed further was robbed from them, as they were presented to Dina's boyfriend Josh, sat strapped to a large chair bolted down in the centre of the room. It looked almost like a throne, with narrow padded platforms on either side of his waist, and a padded section on the floor at his feet. Most enticing was the large door behind him marked "EXIT".

Josh was completely naked, bindings all up his legs to hold them open where his thick erection was on full display. He was active enough that the outline of muscles were usually evident along his arms and legs no matter what he wore, but entirely unclothed the girls were drawn to them, dark hair sprawled all over his body except for around his cock where it was kept trimmed at Dina's request. His hands were bound behind his back, unable to move much at all.

Ahead Dina and Kelsey's rails split off in a number of different directions with a web of switches in the ceiling. For now they were hauled off to the side, Kelsey writhing to try and turn her exposed tits away from him or slow her progression. Strangest of all was the metal rope from the centre of the ceiling just a little in front of Josh, which drooped down to a machine under his chair.

"What the fuck is going on? How did you all get here?" He yelled, straining against the ties and unsure where to look with the three half-naked beautiful women before him, "I saw some of it on the screens but I don't understand what's happening."

Screaming into her gag, Dina wrestled with her bonds as she was brought to a stop in the room, too far to reach him. She saw the screens he referenced in the wall above where they had entered, still playing loops of the various decisions, orgasms and humiliation the girls had been made to endure, the audio quietly overlapping. The replaying of the clips mortified Kelsey, but somehow it only made Dina numb, her boyfriend made to watch as she and her friends were undressed, tormented and pleasured for a mystery audience.

"When we went down the slide we ended up down here," Sade shouted in response, glad to finally have someone to talk to. Though she was further away than the rest, she clocked the exit door behind Josh, as well as three final LED lights above it, and had a feeling this was going to be the worst predicament yet.

"We were wondering where you were, no-one could find you." Said Josh, trying to keep his eyes on his girlfriend but instinctively looking at Sade as he spoke to her, failing to stop himself from glimpsing at Sade's cute little nipple piercings. "How the fuck do we get out of here?"

Before Sade could muster an answer, there was a clunk above her as she felt the rope released from the reel on the contraption overhead creating a lot of slack and revealing the large metal connector at the end of the rope. Another length of similar rope peeked from a new hole in the ceiling, the same metal connector at the end magnetically attracting to Sade's and then screwing mechanically together. Then the rope dropped, the ceiling parting in sections ahead of her until the rope leading up from under Josh's chair dropped too, and in a moment of tense silence Sade had the sinking realisation that it was the same rope. It immediately began to retract quickly into the device under Josh.

"No, fuck! No!" She screeched, yanked forward again as the rope was pulled taut, dragging her into the room as her strong legs fought it but were ultimately brought skidding over to him.

"Wait, what... what's it doing?" He yelled, but was drowned out by the volume of Sade's protest, Dina's cries muffled by the gag, and Kelsey grateful that all attention was off her as she was brought to a disgraceful orgasm. The humiliation of herself and her friends was too much to bear, and she was embarrassed to admit to herself that it was only fueling her arousal. All attempts at maintaining composure were abandoned, allowing the pleasure to envelop her, her tits to sway to-and-fro, and her eyes to wander to Josh's broad frame and meaty erection. With all the cocks moving inside her lithe body, and in a dizzying haze of pleasure, it was hard not to imagine Dina's boyfriend fucking each of her stretched dripping holes.

Sade was brought to her knees as her wrists were pulled down to the floor beneath his chair, resting her legs on the padding at his feet. The weight off her feet was welcome, even as she was forced to realise that the freedom she had been afforded up until now was now coming back to bite her. It had been their choice which girl and which hole they left available for use, and she suspected there were numerous incarnations of this room's design to accommodate all of them. No further confirmation was necessary for her to be certain that the red lights above their exit wouldn't change without her taking Josh's dick in her remaining hole. That thought alone might have had her shamefully horny, but with the growing thrum against her clit it was unavoidable.

The concept of pleasure began to feel alien to Sade who barely recognised the hollow sensation in her pussy, while her heart stung from the complexity of betrayal she was being made to navigate. Josh awaited an idea or explanation from her, while she felt the girls' eyes bearing on her to make a decision, to get them out of here but some other way. To lead them to some alternate solution. Just turning to face them felt like too much.

"Fuck, Dina I'm sorry. I-" Sade mumbled, looking back over her shoulder to where Dina was still being held taut on the balls of her feet, her breasts bouncing with her quickened breathing. Sade had expected to see her angry, defeated or panicked but instead she looked strangely placid, even as Sade repeated, "This is my fault, I'm sorry."

Dina shook her head, eyes fixed to her friend. There was no need to panic, the choice was clear and she had no desire to prolong her suffering or anyone else's. Dina gave a small nod of encouragement. Devastated as she was that she was going to be made to watch another woman pleasure her new boyfriend, she was at least grateful she had opted for the small dildo in her ass. If she had left that hole free, she would likely have been forced to take his long thick dick in her rear for an audience. That was sure to have been more painful and humiliating than this.

With wordless understanding reached between them, Sade nodded gravely and took the instruction, trying her utmost not to let the growing pleasure show on her face as she turned forward. Josh's expression was incredulous, looking down at the black beauty kneeling beneath him as she opened her lips, lifting her mouth to the tip of his firm cock and licking tentatively along his shaft. He groaned, having been erect for so long now his balls were almost painfully tight. If he hadn't been denied for so long, he was sure he would have been finished within seconds, a blowjob from Sade the stuff of wet dreams for half the people he knew.

"What the... fuck is this place." He groaned, rolling his head back to rest on the padded back of the chair.

The vibrations on the toys intensified for all of them, thrusting as quick in and out of their holes as they had done before, Sade unable to keep from moaning as she pleasured Dina's boyfriend, nor keep from enjoying his warmth in her mouth. Now every bit as fully penetrated as her friends, she bobbed her head quicker, her ponytail dancing up and down with her movements as the toys sped up to match her rhythm.

When the orgasm swept over Dina she could hardly believe herself, the degradation underscored as one of the lights above the door changed to green and faded a few moments later. Her gratification was part of this twisted torment, but she couldn't deny how sexy the scene was, made to watch one of her best friends suck her boyfriend's cock. Her reaction to the bliss on his face was almost instinctive by now, seeing it so often when they fucked, and the sight of him enjoying her body always tipping her over the edge. She hadn't expected it to be as alluring when she saw him enjoying someone else's. Conceding how hot it was got her so turned on, the next climax had her squirting and screaming, fighting to stay on the balls of her feet to keep from spinning so she wouldn't miss a moment. Her reaction drew Josh's attention, who locked eyes with her and brought her to another screaming orgasm. In her eyes he recognised a familiar burning desire.

Unable to stop climaxing over and over, Kelsey noticed it didn't seem to impact the lights on the wall. As she was trying to conclude what her role in this last challenge might be, she was jolted forward, brought across the room towards Josh's chair. For a moment she resigned herself to having to take over pleasuring his cock, and almost relished the opportunity to demean herself further, but instead she was pulled upward. Careful not to step on Sade's legs splayed out on the mat, the blowjob was momentarily interrupted as Sade looked up to see Kelsey struggling to find somewhere to put her legs, eventually placing them in the only available spot: her knees landing on the padded platform either side of Josh, straddling him. The stench of her sweet sex filled the air, but her hips weren't permitted to drop down, her body pulled taut by the rope reeling in. She soon realised the setup had been carefully configured so her ample tits were pressed to Josh's face.

On the edge of orgasm, Sade's vibrator slowed significantly, along with everyone else's.

"Is this a fucking test or something?" Josh exclaimed, just about able to see Sade by looking down through Kelsey's legs.

"If you don't do it, we're not getting out of here." Sade proclaimed, her confidence returning as she looked past him at the three red lights, noticing one of them lit for a moment every time Dina orgasmed. After some hesitation Josh took Kelsey's nipple cautiously into his mouth, and one of the red lights went green. She moaned gratefully, and their vibrators all increased to about half speed, renewing the girls moaning in unison for a second, before Josh flinched, pulling back. As he stopped sucking, the vibrators slowed again and the green light faded back to red.

"If you don't have her tits in your mouth when I finish you, we're going to be stuck in here a very long time." Said Sade, inferring that all three lights would have to be lit simultaneously to release them. Taking his slimy wet cock back in her mouth, she started up slowly again, the vibrators quickening, then increasing in speed again a moment later when Josh began sucking Kelsey's nipples. The serum was again squirted from the dildos, swallowed more eagerly and lubricating their holes.

Josh was now staring up at Kelsey as he worked her up more than she thought possible. She was so humiliated, and as she squirted yet again, now all over Josh's abdomen, she was sure it was getting on Sade too, and her arousal spiked further. There was also the palpable sense of his girlfriend watching, her ass jiggling in the air as her body was pummelled with orgasms as her friend's boyfriend sucked her tits. Somehow that only emboldened her, drawing yet another climax. She was sure she heard Dina orgasming too, as now two of the lights shone green.

As the green faded again, Dina was morosely reminded that she would need to try and hold her orgasm. It sickened her how difficult it was to do at what should be a horrifying scene, yet another orgasm escaped her, until she was forced to try focussing again on the physical ailments to try and fend off the next. This time it was the chill on her nipples and the ache of her arms she thought of, the number of sore muscles had quadrupled, with every inch of her nearing agony and every hole stretched. Even this pain had become erotic, and she realised that she wouldn't be able to hold an orgasm long at all in this state.

No longer so acutely the centre of attention, Sade relaxed a little, content for Kelsey to draw Dina and Josh's eyes while she worked. Thrusting his cock in and out of her mouth a little faster, she wished she had her hands free to help, her jaw growing sore. She could only imagine how her friends were faring after what must be over an hour now of face-fucking. The buzz of the toys were deafening, but Sade got the sense her own devices were out of sync. Coaxed over and over to near-orgasm, the sensations kept slowing, seemingly keeping her pleasure corresponding with Josh's. When she found an especially pleasing rhythm, or rubbed the tip of her tongue on an especially good spot along his shaft, she heard him moan and her vibrators roared more ferociously.

Unaccustomed to sucking a cock for this long, her muscles were struggling to maintain pace, but with the chorus or orgasm all around her, she doubled her efforts, pumping his cock with her mouth and moaning along with them. Josh was so close now, focussing on keeping his mouth on Kelsey's incredible tits, swapping to take the other nipple in his mouth and getting an instant reaction as she began shuddering with another climax, her calves pressed to his thighs for stability. Sade had found a flawless pace, moaning loudly around his dick and seeming to cum with him as he spurted spunk into her mouth, still sucking him until he was entirely drained down her throat.

Gasping for air, Sade pulled her mouth from his cock, her chin trickling with cum, saliva and Kelsey's juices. The cuffs clicked open all around the room, Dina falling in a heap to the floor, Sade toppling backwards onto the mat while Kelsey landed in Josh's lap. Acutely aware she should probably get off him now that she wasn't being forced to straddle him, it took Kelsey a few seconds to muster the energy to actually move. Josh placed his hands on her waist to guide her down safely, and his touch surprised her, their eyes meeting briefly and eliciting a blush from them both.

Firmly on her feet for the first time in a while, Kelsey rolled her shoulders to ease the aching, reaching up to where the strap around her head had loosened and gratefully extracting the now-still ribbed dildo from her mouth and tossing it aside. Massaging her jaw somehow made it actually more painful, so instead she brought her hands to her pussy, trying to manoeuvre the toy out of her and the sodden wet bikini bottoms. After some fumbling, she resorted to dropping them to her ankles and easing out the toy. It hurt more now she was empty. Kelsey wasn't sure she could face prying the long thin toy from her ass, so left it for now, and as she went to pull her bottoms back up, she realised she didn't want the wet fabric on her skin again, so left them on the floor and walked away nude.