The Sixty-Nine Competition

Despite the room being warm at best, Natalie was feeling hot all over. Being bound naked had the tendency to do that to her. Especially being bound to another slave girl who was just as naked and very obviously horny.

Not that Natalie was any better in that regard.

She wasn't starved for sex like during the many, many times when Mistress had teased her to the brink of insanity just for the fun of seeing her shiver with frustrated need. But while her last sexual relief wasn't that far in the past, Mistress had made sure that she was properly primed for today's challenge. Which hadn't taken much effort. It was impossible not to get aroused from merely existing in this household together with a good dozen other slave girls where something naughty was going on at every hour.

Natalie's eyes were trained on Sam's juicy pussy right beneath her face. She crouched over Sam on all fours, hands bound to Sam's legs, shins joined with Sam's lower arms, trapping them both in a classic sixty-nine position, albeit one where they'd have to strain themselves a little to get their mouths onto each other's crotch. Mistress didn't like things to be easy.

"The rules are simple," Mistress announced, watching the two of them from her comfy seat. "You have one hour. In that time you'll show me at least five orgasms each. Anyone who fails to do so will spend the hour after that with the punishment plugs."

Natalie winced. The punishment plugs were two large metallic dildos with the ability to deliver electric shocks. She'd made their acquaintance a couple of times already, and while they weren't the worst punishment a bad girl could earn herself around here, having your stuffed pussy and ass fried at the same time was a special kind of hell. Better to do a good job and avoid them. And hope that Sam would cooperate.

Five orgasms in an hour were easily achievable. She herself had gone through many more than that in previous sessions, though some of those had been challenges of her endurance in their own right, and had usually involved some heavy-duty vibrators. Still, she had zero doubts about her ability to make Sam come with her mouth five times, unless Sam deliberately fought back.

Resisting pleasure and pushing back your climax was a skill every slave girl was well versed in. Mistress liked to make two of them compete by making one slave eat the other out, with the prospect of a reward if she managed to make her slave sister come, or a punishment if she failed. The other one, of course, got punished if she couldn't hold back. Mistress usually balanced the stakes so that the punishment for an orgasm was much higher than the punishment for failing to eat the other one out successfully, because slaves were expected to be able to deny themselves when prompted. So if Sam decided to use this skill of hers, Natalie would stand no chance of meeting her quota.

But Sam wouldn't be this traitorous, now would she? Sure, she was one of the more mischievous slaves, showing some decidedly switchy tendencies instead of the natural submission that had brought most of them into Mistress' possession, but she wouldn't go so far as to deny herself just to get Natalie in trouble, right? Sam might be mischievous, but she was also hedonistic to a fault, jumping at any and all opportunity to indulge herself.

"If everything's clear, the hour starts now. I want no talking. Entertain me with your actions, not your words."

Natalie lost no time. Even without the threat of a painful punishment she would have been eager to get her lips on Sam's juicy folds. She loved everything about eating another woman out, starting from the sweet earthy taste that was familiar and yet individual, to how nice the soft texture of the labia felt against her mouth, and most of all hearing the blissful moans of her partner.

Her masochism might have played a part in her signing up as a slave, but the main drive had always been her need to make others happy. If she had the choice between being eaten out and eating someone our herself, she would choose the second option one hundred percent of the time, no matter how desperately horny she might be at the moment. Or rather, especially when she was desperately horny herself. There was nothing hotter than giving up her own pleasure in favor of someone else.

Like she was doing right now, apparently.

While Natalie gave it her all, showering Sam's pussy with hot licks and kisses, her slave sister showed no inclination of returning the favor. She lazily lay back, reacting with a happy sigh every time Natalie hit an especially nice spot, seemingly content with enjoying the attention she received. Which was fair enough since it was bound to feel real nice, but it would set her up for a date with the punishment plugs. Or was she so convinced of her oral skills that she'd decided to indulge herself a little and then fulfill her quota later in a quick burst?

Natalie tried not to be annoyed at this lack of reciprocation. As a slave she was used to giving pleasure without getting anything back. That was part of the job and part of the fun. But her body had already been primed for some mutual action, and her pussy clenched in frustration as it didn't get the expected attention. Natalie considered lowering her hips to force the issue, but the way they were bound, she couldn't easily ride Sam's face. No, she'd have to wait for Sam to show some initiative.

It didn't take long until Natalie's skillful tongue play brought Sam to her first orgasm, and going by her hitching breaths it was a good one. Natalie completely forget about her frustration as she kept Sam's climax going, slowing down a little so as to not overwhelm her and leave her eager for future rounds, but still making sure that the orgasm would be as long and satisfying as possible.

She shoved her tongue deep into Sam's spasming pussy while using her upper lip and nose to keep the stimulation going on Sam's folds and clit. It was a messy affair, which only made it all the more fun. These were the moments Natalie lived for, where she could literally get down and dirty with another woman and allow her to experience the pinnacles of bliss.

Natalie backed off as Sam's climax slowly petered out. While time was of the essence, no one would gain anything from her stimulating her through that post-orgasmic phase where she was too sensitive to enjoy it.

Okay, that wasn't necessarily true. Mistress would surely enjoy the show. She loved making her slaves scream from overstimulation almost as much as she loved seeing them delirious with unfulfilled need. But while Natalie had no problem torturing her slave sisters when she was told to do so, she wasn't one to revel in cruelty for cruelty's sake.

Even if she was a little miffed that Sam still hadn't started eating her out in turn.

Natalie wiggled her hips, hoping that Sam would take the hint. Which she did, at last. There was some shuffling around as Sam lifted her head. Seconds later her hot breath tickled Natalie's pussy.

Satisfied that she'd finally get some pleasure in return, Natalie went back to her own job. Sam was still pretty sensitive, but she'd entered the stage where some skillfully placed gentle licks felt amazingly good and primed the body for the next round. Natalie had barely gotten going when the bliss from Sam's tongue momentarily made her pause.

Sam lazily licked between her folds, far too softly to get anywhere quick, but just the right way to really make Natalie feel the extent of her arousal. Sam's tongue play was the ultimate tease, setting her pussy alight with a hot itch for more. Seemed like she planned to turn Natalie on to the max, to then unload all the built up tension in several waves of explosive pleasure. A much riskier plan than the straightforward approach of licking and sucking as ravenously as possible, but if she could pull it off, the wait would be well worth it.

Only that Sam slumped back down after a couple of licks.

Natalie groaned in frustration. She could only assume that Sam knew what she was doing, even though it was hard to believe. Yes, Sam had succeeded in getting her painfully aroused, but it had been far too little pleasure to achieve anything. She would have asked what the fuck Sam was doing, but Mistress had explicitly forbidden any talking. Well, even if Sam decided to screw around, it would only blow up in her own face if she ended up missing her quota because of it.

They had no way of telling the time, but Natalie was sure that she was on track as she brought Sam to her second climax. By her estimation they were twenty minutes in at most, so she easily had enough time for three more rounds. She should be in the clear. Unless, of course, Sam decided to drag her down with her.

By this point Natalie had serious doubts that Sam was even trying to win the challenge. She had licked her a couple more times, but always far too softly and far too briefly to get anywhere. Unless this anywhere was a seriously agitated and frustrated Natalie.

Sam might not show any motivation in bringing her closer to her first orgasm, but her seemingly lazy licks were too deliberate to believe that she was just messing around. She knew how to tease around Natalie's dripping entrance to make her desperate for penetration, how to flick her clit so as to put every nerve on edge without providing any satisfaction, and she especially knew how the hit the worst possible moment to stop all stimulation and leave Natalie's pussy aching.

Natalie was no stranger to being edged, and she had learned to deal with the frustration without letting it distract her from doing the best possible job of eating Sam out. Still, the hot tension between her legs was quickly ramping up to becoming unbearable. If Sam continued like this, she'd soon be in that needy haze where it she was ready to hump anything for just a smidge of relief.

Which meant that this might very well still be all a part of Sam's plan. After all that teasing, five orgasms in half an hour weren't impossible. They would become painfully intense, though, quite possibly to the extent of keeping Natalie from reciprocating because she'd be too busy moaning and screaming.

Wait, was that it? Was Sam enjoying some pleasure now while setting Natalie up for failure in the second half? If so, that was an exceptionally cruel tactic of hers. Being tortured by the punishment plugs was bad enough on its own. Suffering through their harsh penetration and painful shocks after her pussy had just been shredded by five orgasms in quick succession would be absolutely brutal.

Maybe Natalie was reading too much into it, but as she licked Sam to her third orgasm while only receiving these maddeningly teasing tongue flicks in return, she grew more and more certain that she was on the money. Especially since it was Sam she was dealing with.

Sam loved playing games at the expense of others, and Natalie could respect that. The life of a slave wasn't supposed to be fair, and if Sam got through with her scheme to land her in a world of pain, then Natalie couldn't even be mad at her. Sure, she'd curse Sam's name while the electricity in her tender areas made her scream, and she might even vow to take her revenge, but ultimately she'd know that she only had herself to blame for letting herself get outplayed.

So she simply wasn't going to let it come to that.

Natalie redoubled her efforts. She only needed to get two more orgasms out of Sam, which should be very doable. And once Sam tried to ramp up the intensity at the last possible moment, she'd meet all the resistance Natalie could muster. It might not be easy to hold herself back after all the teasing, but it wouldn't be her first time to prove her willpower like that.

It already sounded like Sam was approaching her fourth orgasm, when a sharp pain in Natalie's thigh broke her focus.

"What?" she gasped, only to have her ass light up as Mistress' crop reminded her that she wasn't allowed to talk.

Natalie gritted her teeth and looked back, just in time to see Sam smirk at her before she chomped down on Natalie's soft thighs again.

Damn, that girl had some sharp teeth! Natalie's thigh smarted worse than her ass, and Sam didn't let up. She only clamped down harder and sucked Natalie's flesh with all her strength. That was going to leave a giant bruise for sure. Natalie was real tempted to return the favor, to make Sam yelp as she took a bite out of her own juicy thighs. But if she let herself get distracted, she'd lose her chances of winning. It seemed like Sam had realized that she'd screwed around for too long and switched tactics to at least drag Natalie down with her. Well, if that girl thought a little pain was enough to throw her off her game, then she was sorely mistaken!

Natalie clamped her lips around Sam's clit. She might not bite, but she could suck just as strongly as Sam did, and to devastating effect. Sam had to let go of her thighs as the moans broke out of her. Her pussy was supremely sensitive after those three orgasm, even with Natalie having taken care to be gentle and to let her recover between each of them, and this had to feel so intense. Sam squirmed beneath her, trying to escape this painfully sharp pleasure, but they were bound to each other too tightly and Natalie easily stayed on her target.

The moment she had to stop to get some air, though, Sam bit down again, this time going for the sensitive inner thighs just below the crotch. The pain made Natalie's eyes water, but that wasn't the only reason she was shaking. It was so frustrating to feel Sam's mouth this close to her throbbing pussy without getting some much needed pleasure out of it. She might have vowed to deny herself if need be, but that didn't stop her body from craving the stimulation.

Soon they found themselves in a frantic struggle with each of them trying to break the other's focus by overwhelming her with the sensations they forced upon each other. Natalie's thighs ached all over and she couldn't keep herself from whimpering each time Sam made her feel the sweet pain of her sharp teeth digging into the tender flesh. But she stayed strong and gave it her all, showering Sam's pussy in ravenous licks, only interrupted by bouts of sucking her reddened clit so hard as to make her squeal.

Her efforts were rewarded when Sam's spasms betrayed her fourth orgasm. Given her hot groans, she was entering the realm where the pleasure of the climax was painfully intense, with the prospect of turning into pure pain if the orgasms continued. Well, only one more to go.

Natalie was ready to attack Sam's hypersensitive clit to throw her off any bitey attacks, but it seemed like Sam was too exhausted by her climax to retaliate. She lay beneath Natalie breathing heavily as her body slowly recovered.

Even then her pussy stayed overly sensitive, but that was her problem. As soon as it seemed that Sam was completely done with her orgasm, Natalie dug in again. The time for being gentle was over. If you wanted to keep someone coming after you'd already exhausted them with pleasure, sheer force was your best option. Sam's body would register any teasing touches as pain right now, but as long as she was still on that high of arousal, it shouldn't be hard to force more orgasms from her.

Well, not hard for the one doing it. For Sam it would be intense as all hell.

Natalie had anticipated Sam to try and throw her off her game again, but the sudden ticklish sensation on her feet still caught her off guard. The way they were bound, Sam could get at her soles with her fingers, and she was able to use what little freedom of movement she had to far too great effect.

"Hey, that's-"

Smack! Smack! Smack!

Natalie's complaint ended in a shriek as Mistress' crop cut into her ass with full force. The crop might not be the most terrifying tool at Mistress' disposal, but it still smarted like a bitch if there was enough strength behind the strikes. And that last one was aimed so the tip of the leather clipped Natalie's swollen labia, the resulting sting blurring her vision.

"I said no talking! If you screw up again, you'll be gagged for the rest of the day."

Natalie barely managed to suppress the automatic "Sorry, Mistress." She knew that Mistress wouldn't wait for the competition to be over before making true on her threat, even if it meant that she'd rob her of any chance to complete the challenge. Scratch that, especially then. Being set up for failure was nothing new to a slave, and in this case Natalie would have only herself to blame.

Sam chuckled at Natalie's misfortune. It was weird how she'd never really tried to win, opting instead to have as much fun as possible at Natalie's expense, but, well, Sam could be unpredictable like that.

Less unpredictable was how she started tickling Natalie again the moment she went back to eating for out. And even though Natalie had been ready for it, she couldn't suppress the involuntary giggles throwing her off her game. That this little pause had given Sam time to regenerate didn't help, either. Natalie would have had such an easy time transitioning her from one climax to the next, but now she had to properly build Sam's worn-out pussy up again.

"Five more minutes," Mistress' voice cut through the air.

Fuck!

Natalie redoubled her efforts. Sam had managed to slip her fingers between her toes and was using this achievement to devastating effect, but no matter how badly it tickled, Natalie couldn't allow herself to get distracted. If it really was only five more minutes, it would be trivial for Sam to resist her oral skills.

Of course she had to try anyway. Even if her failure seemed imminent, she wouldn't go down without a fight. At the very least she could make it as hard on Sam as possible. And while her uncontrollable laughter made it pretty much impossible to lick with any kind of strength or precision, she could still go right for Sam's clit. Sucking was easy enough even so. If anything, her frantic giggles would only add some additional vibrations.

Sam was back on the edge in no time at all. She kept wiggling her fingers, but the more pleasure Natalie forced onto her, the less energetic her tickling became, until her lazy strokes were barely a distraction anymore. Her overly sensitive pussy resisted the build-up, and yet her moans grew deeper and louder by the second.

If Natalie hadn't known better, she would have thought that Sam was fully immersing herself into the bliss, doing her best to help that orgasm along. But that didn't make any sense. The four orgasms she'd had so far would have been plenty satisfying already. If anything, another one would only serve to strain her with its intensity. She could achieve nothing by playing along except to gift Natalie an easy victory, and yet it seemed like this was exactly what she was doing.

Natalie pushed the doubts out of her mind. Likely it was some kind of trick, but she didn't have the time to worry about it. Mistress had just announced that there was only one minute left. She sucked with all her remaining strength and brought her tongue to the action, attacking Sam's swollen clit from all sides at once. That had to feel crazy good. No woman would have been able to resist this kind of pleasure without some serious mental fortitude.

And Sam showed no inkling of said fortitude.

She got loud as she exploded for the fifth and final time, her screams a testament to how sensitive she'd gotten from having so many orgasms in such a short time.

There was no question about how much she enjoyed it, though. These throaty moans following the screams spoke of pure bliss and made Natalie's pussy throb from jealousy. It had been some time since the teasing licks, but being forced to eat Sam out to the best of her abilities while being tormented by her teeth and fingers had made sure that her arousal had never diminished. Natalie was so ready for an orgasm of her own, and sadly she had no guarantee of one. The only reward for winning this challenge was to dodge the punishment plugs. Well, maybe Mistress would be extra nice and allow her to rub one out while she watched Sam suffer the consequences of her laziness.

For now, though, Sam only suffered the last cramping contractions of her orgasm. As much as she'd enjoyed herself, it was just as clear how much the pleasure had taken out of her. All strength had left her body as she lay there below Natalie.

"A fine performance, even though, of course, only one of you showed me the five orgasms I requested. I would say there's no need to waste any time to proceed to the punishment."

Mistress undid the ropes holding the two of them together. Natalie stretched herself. Compared to some of the predicament bondage setups Mistress liked to put them in, the position had been almost relaxing, but it was still nice to be able to move her body again after crouching on the floor for an hour. Sam waited until all the ropes were gone before she sat up herself, making full use of every second she could lie down and relax. Fair enough, since she was going to need her strength for the upcoming punishment. Her pussy had to be crazy sensitive, and the shocks wouldn't be kind to her. Natalie almost felt sorry for her. Almost.

"Now be a good girl and present your holes to me." Mistress had taken out the punishment plugs, colorful cables dangling down from the bases of their metallic shafts. To Natalie's astonishment, she seemed to be addressing her.

"Mistress?" she asked when it became clear that it really was her who was the focus of Mistress' attention.

"What's the matter? The rules were clear enough. Sam showed me five orgasms, while you didn't show me a single one."

"Wait wha..."

Natalie groaned as the penny dropped. Seriously? She looked at Sam, who had such a wide grin that it threatened to split her face in two. "You knew about this, didn't you?"

"Could be, could be. And you have my heartfelt thanks that you pulled through and made it to all five. You cut it kinda close there at the end. I would've hated to feel those things inside me myself." Sam laughed, then tilted her head as she looked Natalie in the eyes. "How mad are you?"

It sounded almost apologetic. Almost. Or at least as close to apologetic as Sam would ever get.

Natalie took a deep breath as she fully took in the depths of how unfair this whole thing was. Only to find herself returning the grin. "Well played," she just said. "Well played."

Mistress joined the general amusement. "I have to say, you're taking it a lot better than I thought. I expected at least a little tantrum. Which would have had consequences, of course. But since you're such a good sport about it, I think it's only fair if Sam returns these five orgasm to you, as a little reward."

"That sounds amazing. Thank you, Mistress!"

"After your punishment, of course. Don't think I'll let you out of that."

Natalie sighed. "Of course not, Mistress."

Despite her words of resignation, she was still smiling as she turned around, put her head against the floor and raised her hips to give Mistress full access to her holes. Yes, this was going to hurt like a bitch, but hey, that's what being a slave was all about. And she was looking forward to Sam returning the favor later.

And she was going to use that chance for some revenge of her own. Let's see how well Sam could focus when it was her getting bitten and tickled.