Chapter 8

Having blown his load and acquired a new slave, Isaac decided to take another crack at his project. He found his luck suddenly on the upbeat with everything coming together perfectly and his tools working without the slightest issue. Not to mention he got Donna to give him a few special "parts" for his machine. He managed to complete it before the end of the day and was eager to show it to Holly and Alice, but formed a devious idea as he looked at his finished creation.

"Sorry girls, no sex tonight," Isaac said with Holly and Alice stripping down and slithering in his lap on the couch.

Looks of horror crossed their faces like drug addicts hearing that their dealer was out of merchandise. Actually, they could legitimately be called addicts with Isaac as their dealer. Sex slaves without sex left them with nothing to do.

"But Master!" Holly whined.

Chuckling, Isaac wrapped his arms around his naked slaves and held them close. "Sorry girls, but I want to rest up tonight. You two can still play with each other, but I want to save my stamina and reserves for tomorrow."

"What's happening tomorrow?" asked Alice.

"I have a surprise for you girls, or two surprises to be more exact. But I need time to prepare it and it would be best if you two were out of the building. Holly, do you have work tomorrow?"

"Yes, I have the morning shift, from 6:00 am to noon."

"Alright, you can take my truck. And Alice, tomorrow at say... 11:00, you head down and have lunch at the diner. Just hang out with Holly for an hour. Then by the time you come back, your presents will be all set up and you can play with them to your hearts content."

"What kind of presents are they?" Holly asked giddily.

"Let's just say that there is a reason why I want to save myself for tomorrow. Get ready to have some of the best sex of your lives."

It was a long night after that announcement, as the girls were pretty much bouncing off the walls at the thought of getting special gifts. Holly's childishness never ceased to make Isaac laugh. She was like a little kid on Christmas Eve, and even on Isaac's orders, she couldn't stop begging him to spill the secret. She quickly started bargaining with him on things she would do for him if he told her, but he always deflated her attempts by reminding her that she normally did those things for him, would be overjoyed to do those things for him, or would probably even enjoy those things more than him. Her hyperactivity even spread to Alice, turning the normally quiet little kitten into a happy gas molecule.

It certainly didn't help that Isaac had told them he wouldn't have sex with them. In order to give them a way to vent their energy, he finally tossed them onto his bed and told them to have at it with each other. He made it an order and told them he would even watch while they did it, just for that extra incentive. Two hours later, he was wondering if the girls had been drinking Red Bull by the liter. It was Alice's turn to use the strap-on, and he was using it to skull-fuck Holly with nothing short of fanatic brutality.

'Jesus, they had better settle down before someone ends up needing a trip to the dentist, ' Isaac thought, watching as the dildo slid back and forth between Holly's lips over and over again.

Just as planned, Alice left the apartment building before 11:00, heading down to the diner where Holly worked. With the two girls gone, Isaac got everything ready, eagerly waiting for two of his three slaves to return home. Back at the diner, Holly and Alice could barely think straight. Holly was eyeing the clock more often than usual and Alice could barely focus on eating. Isaac had promised them some of the best sex of their lives, and the only thing separating them from cumming over and over again were some ticks of the clock.

Finally, Holly's shift ended, and the two girls wordlessly sprinted out to the parking lot and into Isaac's truck. They screeched out of the lot and into the street with Holly trying to contain herself and keep her hands steady. The short drive to the apartment felt like the journey from the Lord of the Rings, but the girls soon returned home and sprinted through the apartment building, too impatient to use the elevator and simply zooming up the stairs. They reached Isaac's apartment, hearing a peculiar hum reach them as Holly worked her key into the lock. It was low and continuous, some kind of mechanical drone. They flung the door open, stripped off their clothes, and ran to the bedroom, feeling their jaws drop at the sight before them.

Isaac's project was on the floor at the foot of the bed, about the size of a beer keg. It had an aluminum skeleton frame made from bicycles with top lined with the seat cushions of a junked car. Inside was the motor from the broken power sander, turning a gear with a riveted arm attached. The arm had a secondary joint, turning the rotational movement of the arm into a linear movement, and converting it into a piston. It came with a second gear with a second addable piston. Bolted to the arm of the piston was a dildo that moved through an opening in the top, the same with the second optional piston, and secured to the front in an upright position was a wall-powered vibrator with a rubber head just slightly smaller than a tennis ball, one of the tools Holly used to train Alice. Riding the device was Donna with the dildo moving back and forth in her anus at almost painful speeds and the vibrator bringing a very slow yet continuous flow of liquid arousal from her slit. In her mouth was a gag and her wrists were bound with the rope tied to the back of the machine. She was wearing a full-body fishnet suit and had clothespins on her erect nipples.

She had been like this for almost an hour, unable to move at all with her asshole being brutalized by the piston and the vibrator teasing her relentlessly into having orgasm after orgasm. Isaac had made her take position the minute Alice left, and was watching her from his bed, a smile on his face and his erection in hand. Of course he had monitored her carefully to make sure she was never injured, as well as stopping the piston to apply fresh lubricant. Holly and Alice moved slowly through the room, their eyes never leaving Donna's naked body. They had never before seen her like this, never even imagined it. Her lips, chin, and chest were wet and sticky with saliva, and the sea of orgasms she had been forced to endure had almost soaked the contraption. Her breasts were pink and swollen from the clothespins, and jiggled endlessly as she was sodomized. The fishnet suit seemed to give her body added definition, showing off her big breasts and wide ass, while complimenting her taut, flat stomach. Around her neck was a dog collar, with her name engraved on the tag.

"What do you think girls? Yesterday, Donna asked me to make her my slave. Of course I accepted and now she's just like the two of you. Now the four of us are one big happy family."

"This is awesome! Master, may I?" Holly asked ecstatically.

"Go right ahead."

Eagerly climbing up onto the bed, Holly faced Donna and began running her hands up the mature woman's naked body. After removing the clothespins on Donna's nipples, she closed her hands around her fellow slave's breasts, barely able to contain the great masses in her hands but squeezing them with the smile of a child seeing their birthday cake. Like Isaac, she had fantasized about Donna's fucktastic body since meeting her, and finally she could act out these fantasies. Leaning forward, she mashed Donna's tits against her face, purring and grinning from the sensation of the huge fleshy pillows smothering her.

While Holly couldn't be happier, Alice seemed uncomfortable. Seeing Donna in such a position, the woman she admired and respected, even loved almost like a parent, she couldn't help but think less of her for it and for herself, for being put in the same position time and time again. But looking over, Donna made eye contact with Alice. She couldn't smile with the ball gag in her mouth, but Alice could see her trying, and she certainly saw the wink Donna sent to her, as if to say "don't worry, let's just have fun".

"Alice, come here," Isaac said kindly, sensing her unease.

Already feeling better from the nonverbal message Donna had sent her, she climbed up onto the bed and snuggled up against him. To Donna, the young girl had never looked cuter and more content.

"Relax, she's part of the family now, and I'm going to take care of the three of you forever. Now, how about you show her some of the things you've learned?"

Smiling, Alice leaned over and took Isaac's cock in her mouth. After all the time he had spent watching Donna, the wet touch of Alice's tongue drew a continuous drip of precum from Isaac, every molecule of which she lovingly sucked up. She moved her tongue back and forth across the shaft, stroking it as she did so. Thoroughly wetting it, she began moving the head in her mouth, scrubbing it with every soft corner while continuing to manually stimulate him. The whole time, it wasn't Isaac that Alice was making eye contact with, but Donna. While Holly was nuzzling the mature woman's bodacious breasts, Donna and Alice stared into each other's eyes. Alice was seeing the erotic kinky side to Donna she had never imagined, and Donna was seeing how far Alice had matured since she met her. Alice was far more daring, taking so much of Isaac's length in her throat that she almost threw up and juggling Isaac's balls with her fingers.

"Alright Donna, are you ready to get off that thing?" Isaac asked, petting Alice's head like a cat in his lap. Donna nodded.

"Holly, would you please?"

Holly kindly untied Donna's wrists and removed the ball gag from her mouth, letting her dismount Isaac's machine.

"So how did you like that?"

"Oh, I love that! I wish I had that thing twenty years ago!" Donna laughed as she stood up and stretched.

"Ok Donna, how about you and Alice 'reacquaint' yourselves? Holly, come show your master some affection."

Holly happily came over to her master's side, sitting with him by the headboard. As she had time and time again, she settled herself down on Isaac's lap and let their points of intimacy connect. As his manhood kissed the entrance to her womb, Holly gained a very tender smile, wrapping her arms around her master's neck and pressing her forehead against his, letting their eyes project their love to each other. No matter how many girls he got, she would always be his first slave, and perhaps even his most precious.

As Holly started riding Isaac's cock and slipping her tongue around his, Donna and Alice nervously sat next to each at the foot of the bed. Together, they looked like opposite ends of the figure spectrum.

"It's weird to be doing this with you," Alice said, unable to look Donna in the face.

"I know what you mean, but we both knew what we were getting into when we decided to be slaves."

"I know, but I've always thought of you ... almost as like my ... Plus with you AND Holly, what interest would Master have in a kid like me?" Alice asked glumly.

Donna smiled and pulled her close, the young girl's head pressed against the side of her right breast. Even with the full fishnet suit wrapped around Donna's body, Alice could clearly feel the warmth and softness of her skin. She felt so ... hot.

"Alice, if there is one thing I've learned since becoming a slave, it's that it's not the kind of thing a kid could do. I've finally realized that you've become a woman, and now it's time for you to realize it as well. No matter how small you may be, you're a woman, just like Holly and I. When we wear these collars, the three of us are equals. Now I love you and you love me, so let's just enjoy ourselves."

Alice smiled. "Sure!"

Donna then leaned down and began to kiss Alice, with Alice returning the sensual contact without hesitation. Wrapping their arms around each other, the two girls lied down on their sides, their lips wetting with their mixed saliva as they licked the inside of each other's mouths. Reaching down, Alice tentatively touched Donna's wet pussy, finding a small gap in the fishnet suit for easy access. She ran her fingers up the glistening pink lips, unable to believe she was touching the woman in such a way, but highly aroused by it. She slipped her fingers into Donna, making her suddenly raise her head and moan.

"Wow, you're sensitive," Alice hummed with her face buried in Donna's glorious cleavage.

"After all that time I spent sitting on that thing with my vibrator buzzing, you bet I'm sensitive. But I wonder how sensitive YOU are..." Donna purred, reaching down and running her fingers along Alice's tiny slit.

For Alice, the experience was almost as unnerving as when Holly touched her for the first time. For Donna to reach out and make such an intimate contact with her ... it was almost like a certain trust had been broken but a new one was made in its place. Alice lowered her fingers, inserting them into Donna and stirring her honeypot. Donna did the same, fingering the small girl with the two of them moaning softly with each internal flick and swirl. Beside them, Holly cried out as she achieved her first hair-trigger orgasm, collapsing onto Isaac with her excitement soaking his lap. Isaac laid her down beside him, letting her catch her breath.

"Alice, it's your turn. And Donna, come give me a taste."

"Yes Master!" they both said lovingly.

Isaac lied down flat on the bed and the two girls crawled over to him. Alice plugged Isaac's manhood into her tiny pussy, taking in as much of it as possible as she settled on his lap. At the same time, Donna was sitting on Isaac's face, purring and jiggling her ass as he ate her out. Wanting to impress Donna, Alice began riding on Isaac like a rodeo bull, lifting her scrawny body up and down on his cock and whimpering softly from the fullness in her pelvic region. Giggling, Donna leaned over and licked Alice's tiny breasts, never able to get in sync enough to actually suck on her nipples but thoroughly painting them with her tongue. While this was going on, Isaac was struggling to breath. Donna's big glorious ass was completely smothering him and he only got access to air when she gyrated her hips, but he loved every second of it, just as much as he loved the feel of Alice's tiny pussy sucking on his cock.

A couple soft slaps to Donna's thigh told her that Isaac wanted to switch, and as soon as she raised herself off him, she could hear him gasping for air. Sitting up, he leaned forward and kissed Alice, then lifted her off his lap. As if reading his mind, the girls got into position for Isaac to fuck Donna. The mature woman lied down with her legs spread and her glistening pussy on display. Holly and Alice were curled up against her on her sides, each of them sucking on one her nipples while feeling each other's naked bodies. Suspending himself over the three of them, Isaac took a few moments to make out with Donna, then forced his cock inside of her without even needing his hands.

She cried out with the rough penetration, having not been spared a single shred of hesitation. Holding himself up with his arms, Isaac fucked her like a dog humping a pillow, forcing his pulsing manhood deep into her pussy. All the while, Holly and Alice continued to suck on her nipples, pulling on them with their lips and teeth to tease her while pinching their own. Feeling Isaac's cock punishing her slit while the two girls played with her breasts triggered another orgasm in Donna, the first one since she got off Isaac's machine. At the same time, Isaac had his first orgasm, flooding her womb with his seed until it overflowed.

Eagerly, Holly and Alice zoomed down to between Donna's legs, each both licking her pussy. Each girl tasted one of her soft pink lips with their tongue, slurping up every drop of their master's seed that gingerly dripped from the opening. With Holly and Alice mooning Isaac, he smiled and began stroking their pussies with his hands, while working his thumbs in and out of their assholes. The four of them stayed like this for over a minute, with Holly and Alice desperately fighting for every droplet of semen leaking from Donna's cunt, all while Isaac toyed with them from behind.

Finally, Holly turned around and began sucking Isaac off, looking up into his eyes with a coy expression. Normally she would have started blowing him as soon as he pulled out of Donna, but in this situation, she was like a dog surrounded by bouncing tennis balls with no idea which one to go after first. After sucking on Isaac until he had regained his erection, she stroked him with her hand, rubbing his dick against her lips and cheeks.

"I love the taste of other women on you."

Isaac chuckled. "Most women would feel the opposite."

"Most women don't know the joys of being your slave. When I taste another woman, I feel proud of you, because I know that my master is successful as a man. As long as you always let me lick you clean, I feel nothing but joy to watch you be intimate with another woman."

Isaac reached out and cupped her cheek. "There really is nobody on this earth like you, you're in a league all your own," he said lovingly.

"Ok, who would like a turn on the machine?" he then asked.

"I would!" Alice quickly shouted before Holly could raise her hand.

"Alright, I'll help you get set up."

Isaac and Alice got off the bed and Alice climbed up onto the machine, nervous but smiling.

"Ok, do you want the vibrator or double-penetration?"

"I'll just stick with what Donna did."

"Alright then, just sit down on here..." Isaac said, taking a moment to rub some lubricant on the rear dildo from a bottle on the nearby dresser. Alice shuddered as she sat down on the dildo, letting the rubber toy sodomize her. To think, Donna had been in this very same position just ten minutes ago.

"And of course, it's no fun without something to hold you still," Isaac chuckled, tying her hands to the back and then securing the ball gag in her mouth.

With the dildo inside her asshole and the vibrator pressed against the entrance to her pussy, Isaac activated the two devices. Isaac had adjusted the rivet's location on the wheel, bringing it closer to the center so that it would move back and forth with less distance, lowering the chances of any injury to Alice's rectal cavity. Upon the activation of the two machines, Alice's muffled screams of masochistic joy flooded the apartment, as her pussy was vibrated like the hands of a jackhammer operator and her asshole was violated with the quick and steady strokes of the dildo.

Isaac then turned to Holly and Donna. "Before I rejoin you two, I want to see just how compatible you are. I want you to put on a show for me. Be as rough as you want with each other."

Donna smiled at the order. Holly was a gorgeous young woman with a delectable body. When Donna had sworn of men and tried dating women she didn't find lesbian sex to be her forte, but that certainly didn't mean she didn't enjoy it. Plus she probably had more experience than Holly had when it came to having sex with other women so–

Her thoughts were silenced as Holly pounced on her, a devious look in her eye. She forced herself between the mature woman's legs and pinned her wrists back. Giggling to herself, Holly began aggressively kissing Donna, forcing herself the woman's mouth with her slippery tongue. At the same time, she jostled her breasts against Donna's, moving in just right way to make their nipples kiss each other. Holly's young but large breasts pointed down, her nipples brushing against the mountain summits of Donna's breasts. Wow, she had no idea Holly was so aggressive!

Releasing one of her wrists, Holly reached down and began working her fingers in Donna's pussy, moving the digits like eels while never pulling her tongue from Donna's mouth. When it came to fingering, Holly's skill was truly unparalleled. Just as she had with Alice, Donna reached down and under Holly and began fingering her the same way, trying to keep up. The backs of their hands touched over and over again as they fought, trying to prove their superior skill when it came to invoking orgasms.

Donna broke first, screaming as droplets of liquid arousal splashed out from between Holly's fingers. However, Holly didn't stop. She merely pulled her lips from Donna's and instead wrapped them around her right areola, sucking on it hungrily. At the same time, she continued fingering Donna, now at frantic speed, using the first orgasm to keep her defenses down and trigger countless others. Alice and Isaac merely watched, observing their intimacy as if it were a sporting event. Isaac had never seen Holly in such a ravenous state. It seemed that she really did have a strong fetish for stacked women.

At last, Donna managed to trigger an orgasm in Holly, and without missing a beat, Holly leaned back and squirted all over her fellow slave, soaking her body with her excitement. Now wanting payback, Donna took advantage of the exhausted girl and got on top of her in the 69 position. She grinded her pussy down on Holly's face while licking the former's gate of paradise. Both women moaned as they licked each other clean, their bodies extra sensitive after their orgasms. Like Isaac, Holly loved the feel of Donna's wide ass on her face and was spanking her as she was straddled. At the same time, Donna was essentially drinking up the remaining fluid from Holly's orgasm, trying to cause another one as soon as possible and prove that she could keep up with and outlast the young nymphomaniac.

From above them, Alice watched with a hungry expression, overwhelmed with both the show before her and the violent sexual pleasure she was enduring with the machine. She watched Donna rub her pussy against Holly's face, her large vanilla ass cheeks rippling from the slightest movement, held within her full-body fishnet suit. Donna's asshole was completely exposed, begging to be penetrated by Alice's tongue, but being bound to the machine beneath her, she would have to wait for the opportunity.

Being the one on top and so close to the headboard, Donna reached out to Isaac's nightstand, where she had left one of the sex toys she had brought with her: a vibrating dildo. She got off Holly and turned it on, then lied down beside the young woman.

"You're going to enjoy this."

"A few of my sisters had those, I loved using them," Holly hummed before the toy was inserted into her.

Holly gave a deep whine of euphoria has the synthetic vibrating phallus entered her, sending waves of buzzing pleasure through her pelvic region. Upon its insertion, Donna pulled it out and began working in inside her as hard and fast as she could, trying to pay Holly back for the aggression shown to her. At the same time, she started sucking on Holly's left breast, her mouth wide open as if she were trying to actually consume it. Holly had her legs spread, letting Donna violently fuck her with the dildo. It seemed like almost every time the toy was crammed inside her, she would release a small orgasmic jet. She was moaning at the top of her lungs, unable to contain herself when faced with such overwhelming pleasure.

After a few minutes, Donna had to stop. Her wrist was starting to hurt. 'Oh, please let this not be the first signs of arthritis... '

As soon as she put the vibrator down, Holly snatched it and got out from under Donna. Getting behind her, she pushed the dildo into Donna's pussy, the toy still wet with Holly's own juices. Donna moaned from the sudden insertion and the rapid thrusts inward that immediately followed. The vibrator being forced in and out pushed aside her tiredness, and suddenly, when Holly stopped, she knew that she couldn't let the pleasure end. Raising herself up onto her knees and elbows, she began rocking back and forth against the dildo, fucking herself with it as if to simulate being in the doggy-style position.

Looking up, she stared into Alice's eyes and felt a glimmer of shame. How strange, that after everything they had done so far today, she would be ashamed to let Alice see in her in this desperate perverted state, fucking herself with a vibrator held by a girl less than half her age.

"Oh god, I'm cumming!" Donna screamed, suddenly coming to a stop with her whole body rigid.

She fell on her side, panting and exhausted, but Holly wasn't ready to let her quit. Lifting up Donna's leg, she got between her thighs and began rubbing her pussy against Donna's. The peculiar touch revitalized the woman, as never before had she done something like this, even when she dated women. Holly began thrusting against her, grinding her slit against Donna's and forcing the two sets of lips to violently make out. Donna could feel it, the hot softness of Holly's pussy against their own, and the concoction of their essences forming as their juices mixed. She was too tired to move, so she simply lay there while Holly sat on her lap sideways, forcefully scissoring her.

Finally, when Donna seemed to have regained some of her strength, Holly dropped down and lay beside her. She retrieved the vibrator and held hit between their pussies, shaking at full power. They stayed there, their unclothed bodies intertwined, the vibrator buzzing between their slits, their large full breasts pressed together, and their lips joined with strings of saliva stretching every time they separated with their tongues swirling. It was actually rather beautiful, and it continued on until both women shared a simultaneous orgasm.

"Ok girls, you've proven to me that you can work well together. Holly, how would you like a turn on the machine?" asked Isaac.

Holly grinned. "Can I? Can I please?!" she squealed.

"Of course. Alice, are you ready to come down?"

Having endured almost a dozen orgasms from the anal pounding she had received and the buzzing of the vibrator against her clit, Alice looked like she was struggling to stay conscious. She gently nodded and Isaac turned off the machine and the vibrator. Removing her gag and untying her wrists, he caught her as she fell into his arms and gently laid her out on the bed. He turned to back to the machine and smiled as the sight of Holly licking the dildo clean.

"Master, can I use this second part too?" she asked, seeing the unused dildo on the retracted piston.

"Ah, I figured you would want the double-penetration. Sure baby, just hold on and I'll get it ready."

While Donna and Alice recovered, Isaac adjusted the machine, setting the second gear against the first and interlocking the teeth. With the second gear set up, he raised the additional piston through the opening in the seat, towards the front, with the attached dildo ready for use. After removing the vibrator and securing everything, he had Holly sit down and penetrated her with the two dildos. She was as excited as could be, barely able to hold still as Isaac tied her wrists back and put clothespins on her nipples for good measure. After securing the ball gag in her mouth, he kissed her on the nose and activated the machine, slowly turning up the speed.

Moving at a careful setting, the electric motor began to spin the two gears, causing the dildos to move back and forth in perfect sync, one always rising while the other one dropped. As they moved, Holly's eyes rolled back and she gave into pure masochistic joy. True, Isaac had been cautious in raising and setting the speed, but there was almost no warning or buildup for Holly. In a single moment, both dildos were moving in her, one being forced in as the other was pulled out. To not only be gagged and tied with clothespins on her nipples but to also be double-teamed by the machine her master had built made her so happy that she wanted to cry. Feeling the two dildos heartlessly ramming her pussy and asshole made her feel so kinky and dirty, somehow both slutty and loyal to only her master. He watched her with a smile, and to be watched by her master as she was brutalized by the machine made her hope that Isaac liked what he was seeing and found everything to his liking. All she wanted was for him to be happy, and of course for kinky fun like this.

With Holly off in her own world, Isaac turned to Alice and Donna, both having regained a fair portion of their energy and stamina. Isaac sat back against the headboard.

"Alice, come over here and give me a kiss. And Donna, I bet Alice is a little sore from riding that thing for so long. How about you make her feel better with your tongue?" Isaac offered with a grin.

A tired smile on her face, Alice crawled over to him and kneeled on all fours in his lap. As they began to kiss, Donna spread Alice's ass cheeks, staring at her prominent gape. The machine had really done a number on her, but Isaac had always made sure that she was never harmed. Plus, it was clear that her cute little ass had gone through a lot of training since becoming Isaac's slave. Too horny to feel any awkwardness, Donna didn't hesitate to lower her head and start flicking her tongue in Alice's back door, making the young girl coo and shudder in bliss. After the anal pounding she had received, to feel Donna's soft wet tongue gently caress her asshole was heavenly. While Isaac kissed her, he ran his hands across her delicate underdeveloped body, loving the way she shivered when his rough skin rubbed against her soft flesh.