The cruel Sadist bowed at her audience and told them, “You can all Venmo me your wagers at your convenience.”

They all acknowledged her and in groups of twos and threes, left the yard until only Joanna, her brother, and the two slaves were left.

“Someday, brother, I’d like to borrow this... this... this thing for a month or so.

“And see what her limits really are...”

Sherie shuddered visibly at the suggestion, an action noticed by the two Dominants that made them smile.

“I don’t know, sis. I know you and I know her and though I know she could handle anything you could put her through, I’m afraid you might damage her.”

“Damage her?”

“Not physically. I don’t much care about that.

“I’m thinking mentally.”

Sherie tried to imagine what the words meant but could not fathom their real implication.

“Oh. Like that bitch I used to own a few years ago?”

“Yeah, exactly like her...”

Joanna shrugged, “I was done with her. I tried to break her down so the person I sold her to could rebuild her however they wanted.

“I haven’t thought about her in ages... Last I heard she was being used in a whore house in Cairo.”

Derek smiled, “So you understand why I might hesitate, no?”

Sherie tried to imagine herself being sold to someone in the Middle East, being used by faceless dark-skinned men in an endless stream.

And, much to her surprise, she found herself getting wet at the thought.

From beside her Master she heard Beth speak, “Excuse me Master...”

“What is it?”

“I’m sorry for interrupting but I really need to pee. And don’t know where I should do it.”

Derek laughed lightly. “Not a problem.”

From the table he produced a funnel and showed her how to fit it into the gag the other slave was wearing. It was not easy but with some effort it was shoved into the breathing hole that went the length

of the phallic gag.

Reaching down he helped her climb atop the bondage bench and the position herself of the opening.

She was surprised at how easily she had become accustomed to urinating in front of an audience and, she noted, how much she enjoyed watching her Master’s other slave swallow it.

The funnel was too small to hold all of her hot yellow piss and more than a little splashed over onto Sherie’s face and into her eyes. And though she tried, the deep gag made it impossible to swallow it all and more than a little splashed out of the corners of her mouth and down her cheeks.

I was noted by Beth first, “Master... she’s not swallowing it all.”

Of course one of the primary tasks of a piss slave is that they swallow every drop. So she knew that the girl would be punished which only stirred her further.

“Thank you, Beth. You’re a good girl.”

He patted her on the cheek and she blushed, aroused by having pleased him.

“What do you think, Joanna? How many days should I had to her celibacy?”

“Days? I think at least a week.”

The words barely sunk into the slave’s consciousness as she concentrated on the task of swallowing. But when the stream of urine ended and she swallowed the rest of it she was able to focus on it.

She knew that even though it was an impossible task, she would still be held responsible for her failure. She had been so thoroughly trained and conditioned that the thought of protest didn’t even occur to her.

“Another week of wearing the chastity belt?” she thought to herself, “I can manage that.”

But she had only just been locked and welded into it just a few days after having been allowed to cum. She had no idea how long she’d have to wear it but knew it didn’t matter.

“Good idea. Another week it is, ” she heard her Master declare.

It was, to her, a meaningless remark. She already knew she’d be encased in the cruel belt for as long as her Master wanted but she was so focused on being in the moment that the concept was beyond her ken.

Joanna noticed that her actions had caused her brother’s cock to become proudly erect, “Any plans for that?” she said, gesturing at it.

“We haven’t double-timed a slut in a while...” he suggested, glancing at the kneeling Beth.

His sister walked over to the table holding all the torture devices and selected a hugely endowed strap-on dildo.

Together they buckled her into it and fitted it so that its base nestled nicely up against her clit.

“Front or back?” she asked.

“I’ll take that ass, ” he said, pointing at Beth’s curvy rear, “I don’t think it’s quite ready for that monster.”

“Sounds good, ” the Dominatrix said before pulling a mat off of a chaise and laying it down next to the bondage table and laying on her back.

Beth looked at the huge latex phallus and was happy that her new Master hadn’t let his sister fuck her still novice sphincter with it. And as it was, she knew it would stretch her pussy quite a bit.

Derek used her hair to guide her mouth to it and ordered, “Better lube that up with your spit.”

She obeyed and stretched her mouth as wide as possible but even then was only able to cover its bulbous head. Even with Master pushing her head down onto it she was unable to accommodate it with her throat. He held her there, cutting off her breath until she started to struggle and then slapped her ass and growled, “Stop struggling. If I want to hold you there until you pass out I will.”

Joanna loved watching her brother dominate his subs and wiggled her butt against the mat so the dildo rubbed against her clit.

The slave stopped struggling and very quickly saw the sparkling phosphenes of oxygen deprivation. She was both afraid and aroused but forced herself to relax and obey. At the very edge of unconsciousness her head was lifted off of the dildo and as she gasped for breath was raised by her hair and lowered onto the plastic cock.

Its girth surprised her as it was ruthlessly shoved into her vulva. Even though thoroughly wet and aroused, it still stretched her painfully. Not since losing her virginity to one of her father’s much older friends had her cunt felt so stuffed.

And like that time, she was not allowed to take time to adjust. Her Master’s hands on her shoulders pushed her down relentlessly until her womb was filled with the monstrous beast. She moaned with the pain but just like that first time, adored it.

Had its sensations not been so overwhelming she might have reflected on how much her desire to be enslaved were influenced by the way she had lost her virginity. Her head was spinning as her torso was pushed forward and the dildo was fucked in and out of her. Quickly her body was unable to separate the pain from the pleasure and an animal-like grunt escaped her throat, “y-y-y-es-s-s...”

On a stroke that had the fake cock almost escape her tight confines she felt her Master’s cock push against the tight ring of muscle that she had so far only surrendered to it. She felt a well-placed gob of spit land there and then, before she could even set herself, Derek’s shaft was shoved through the muscle and deep into her bowels. She shivered with pleasure at its intrusion but it was immediately withdrawn completely.

And at that moment the strap-on was again thrust into her vagina. And then frustratingly taken away again.

But her other entrance was in its turn shoved hard back in.

In and out the real and fake cocks were fucking her in a well-practiced rhythm by the sadistic siblings.

As much as she tried she could not manage the powerful mix of pleasure and pain which filled her being and found herself driven too quickly to the edge of a powerful orgasm. She fought to keep it back, desperate to obey the basic slave rule of never cumming without permission.

“p-p-p-pl..eea..s-se, Master...” she gasped.

The two Dominants fucking her knew exactly what she was asking but were merciless.

With a hard shove into her rectum her Master ordered, “Don’t you dare cum!”

His sister grabbed her throat with one hand and slapped her hard with the other, adding, “Control yourself, bitch... or I’ll whip the skin off your back...”

Though the threat scared her, it also only served to make it harder to hold the orgasm back.

Unseen to her the two Sadists were communicating with their eyes and preparing a shocking surprise. Instead of the alternating see-saw of dildo and cock, both were suddenly thrust in at the same time. She felt something tear inside and opened her mouth to scream only to have Joanna’s hand shoved inside, cutting off any sound.

Grinning at each other the two people fucking her savored her agony.

This wasn’t the first time they had double-timed a submissive but it had been a long time. Ever since they had discovered their shared propensity for Domination and ceased their sexplay, this had become a favorite way to enjoy each other while both were satisfied.

Since his marriage they hadn’t had a chance to but they had both known that eventually they’d split Sherie like this.

That slavegirl would have eagerly traded places but instead was forced to lay and listen to the tempting sound emanating from the three people next to her.

But she wasn’t being ignored. The couple using Beth were aware of just how tortuous their sounds were for the chastity belt-bound slave and it inflamed them even further.

Their thrusts steadily increased in speed as they approached their orgasms and they were quite vocal about it. Their target felt like she was going out of her mind as she fought to keep from cumming and, in more than a few ways, she was.

Beth, the sharp-witted saleswoman of a week earlier was rapidly fading away, ceasing to even exist as she was replaced by Beth, the eager masochist and sexslave. She wasn’t thinking about it though. It wasn’t a conscious choice. It just what was.

And she loved it. She knew it was what she had been searching in vain for for many years, even without knowing it.

Her ass and vagina were on fire with a heat that threatened to consume her soul and she it was the most exciting moment she’d ever felt.

She suddenly felt both organs rammed in and held there as the two Sadists orgasmed together. Her body stiffened and the hand was removed from her mouth.

“You can cum, ” she heard her Master say and to her desperate ears it was the most wonderful words she’d ever heard.

Her body convulsed and her head spun as a hugely powerful orgasm exploded from her middle.

Her voice came out like a keening nocturnal banshee and she screamed, “th-th-thaa..nk you Master...”

They pinned her tightly between them, intensifying the orgasm, and both joined her. One filling her bowels and the other squirting copiously on the cushion beneath her.

And as her body relaxed they began to stroke in and out in alternating thrusts again until another wave of pleasure began to wash over her.

This time she had regained control of her voice and asked, “Please, Master, may I cum again?”

“I think I’ll let out guest decide this time.

“Joanna, it’s up to you. Do you think she should be allowed to cum again?”

The Dominatrix loved having this kind of control and as it was, was already approaching her own encore.

She slapped the girl again and ordered, “Not yet. Not until I cum.”

The slap only aroused the submissive even more and she whispered, “yes...Mistress...”

Joanna could have cum at that moment but she had always preferred to hold it back for an even bigger one. And now, with the addition of the suffering of woman straddling her strap-on, it was all the better.

“What will you do for me if I let you?” she asked.

Desperately, the slave gasped, “...anything... anything you want... I’ll do anything you want...”

“Anything?”

“Yes, Mistress... anything...”

Ready to cum herself, Joanna made a demand: “For the next month you will spend every lunch hour under my desk pleasuring me.”

“y-y-yes...Mistress. Thank you, Mistress”

Joanna’s body nearly shook the girl and her brother, his cock still buried in her ass, off of her as she had a powerful orgasm, barely able to tell Beth, “Okay, cunt. Cum!”

Even with the two shafts buried inside her the two people wielding them had to grab each other’s arms to keep her pinned between them, so extreme were her convulsions.

The other slave listened intently and too became aroused. But then the realization that she would not be able to do anything about it for the foreseeable future came crashing through and silently she began to cry.

“I deserve this, ” she thought, “I need to be punished. I need to be disciplined to be a better slave.”

The three others eventually gathered themselves and went inside to shower together leaving the humiliated girl to ponder her dismal future.

(The End?)

I have other stories I want to write and post but if there's enough interest I can revisit this one.