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 ground 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 said 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 her, 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 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 it 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?!”
“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 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 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.
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 the machine brutalized made her hope that Isaac liked what he was seeing. All she wanted was for him to be happy, and of course for kinky fun like this.