Stocks were not made with the goal of being comfortable. A simple fact which Sarah found out about very quickly. Her ass, feet and hands were stuck on one side of the heavy wooden board, the rest of her hidden on the other side of it, forced into an awkward kneeling position, her head on the floor and her arms thrust backwards. They'd given her a patch of soft carpet for her knees and if she shuffled around a bit, she could rest her head on the parquet without crushing her boobs in the process, but that was about the extent of both her freedom and her comfort.
If the rumors were to be believed, she could expect an experience that was well worth a bit of discomfort, though. Sarah only hoped it would start soon. They'd told her the Lady would be here in a couple of minutes, but time passes slowly when you're bound in such a cramped position. The ridiculously thick blindfold trapping her in total darkness didn't help, either.
Finally there was the sound of a door opening and closing and someone taking off their shoes. It had to be the Lady. Everyone else would've made some sound of surprise upon being suddenly faced with a woman's private parts. Sarah didn't hear anything for several seconds. Most likely the Lady was standing there, checking her out. The thought put a dirty grin on Sarah's face.
"I take it that you're the one who volunteered to be my interactive room decoration for the evening." The Lady's voice was soft-spoken and pleasant, but something about it caused a shiver to run down Sarah's neck. Or up, in her case.
"That's me." Sarah instinctively attempted to raise her head, but even if the stocks had allowed that much freedom of movement, she wouldn't have been able to see her client anyway.
"And you understand the conditions of our relationship?"
Sarah suppressed the urge to mimic the Lady's formalities. Out of her mouth it would only come off as mockery. "Yes. I mustn't try and look at you. And my ass is yours to play with."
"Correct. And you understand that I don't intend to go easy on you? I delight in teaching my playthings how much the human body and mind can withstand. This evening might very well leave you sore and exhausted for days."
"Don't worry about it. I'm tough." There was no way Sarah would've chickened out, especially not after that announcement. She had a reputation to uphold as the district's biggest anal slut. And besides, who cared if she was sore for a few days? With the amount the Lady was willing to pay, she could treat herself to a whole month's worth of spa vacation.
"That remains to be seen." The Lady paused for a moment to give the words time to sink in. "From this moment on until we stop I don't want to hear a single word from you unless I directly ask you something or there is an emergency. You're to be nothing but a pretty ass that exists solely for my pleasure. Do you understand?"
"Yes." Sarah herself was surprised at how submissive that single word came out. She'd heard of the Lady, that phantom mingling within the inner circles of the BDSM scene. The one who never showed her face, yet commanded respect with her presence alone. It was said that she could drop anyone into subspace by merely uttering a few words. That was just an urban legend, of course. And yet Sarah found that her crouched position didn't feel just uncomfortable and slightly stupid anymore. There was something intrinsically right about her being forced down and hidden behind the only part of her the Lady was interested in.
"Very good. There is a multitude of business concerns I need to attend to and I like to have a stimulating ambiance while I work. You're free to moan as much as you need to."
Sarah swallowed at the "as much as you need to." Voicing her pleasure was part of her job, but usually it was more of a service than a necessity.
She gasped as something cool touched her ass. A moment later she recognized the feeling as fingers, spreading generous amounts of lube around her asshole. Sarah didn't strictly need to moan as the fingers unceremoniously pushed into her, but she did anyway. She loved how the Lady made no attempt to be gentle as she drowned both the inside and the outside of her well-trained ass in lube, pushing into her whenever and with how many fingers as she felt like.
Some of the lube trickled down between her cheeks, where the Lady caught it and rubbed it into her pussy lips. Sadly the Lady didn't spend much time there and Sarah's clit got no attention at all, save for a big splotch of lube. But that was to be expected, since she had been contracted only for her anal capabilities.
The Lady wiped her hand on Sarah's thighs before she got up and walked away. However, an exciting tingle remained in Sarah's ass and pussy and she was very aware that it wasn't just lube trickling down her legs. There had to be some kind of stimulant mixed into that stuff.
A loud rumbling momentarily distracted her from the growing need between her legs. The Lady was rolling something heavy up behind her. Sarah got an idea of what it was when something thick and rubbery parted her dripping ass cheeks. Without so much as a single word, the Lady switched on the fucking machine.
It was wasn't the biggest dildo Sarah had ever had up her ass, not by a long shot, but still big enough that it would've given any anal virgin nightmares, and it was covered in rough nubs that rubbed against her inner walls with every movement. It also got wider and thinner several times along its length, like a more rigidly connected string of anal beads, making it impossible to get used to the ever-changing stimulation as the dildo pushed all the way into her. And all the way out again, until only its very tip kept her cheeks apart.
Sarah's moans weren't just for show. It was a very slow fucking, but the Lady used even that against her. If the machine had fucked her just a bit quicker, she could've completely relaxed her sphincter, leaving it open while the dildo kept pumping into her. But as it was, there was just enough time between the wide bulges that her ass closed around the thin part before it was forced open again. And all the while the nubs rubbed the spiced lube all over the inside of her ass.
Whatever the Lady allegedly worked on, it took a lot longer than just checking a few mails. If she even was working. Sarah couldn't hear anything over the constant rumble of the fucking machine. Maybe the Lady was sitting behind her, doing nothing but watching that monster dildo slowly and methodically destroy her. Sarah hoped she was. This was the most intense ass fucking she'd gotten in a long time. Every thrust made her moan like a bitch in heat as the constant build up and release of tension on her sphincter killed any coherent thought left in her mind. It would've be a shame if that performance was wasted on an inattentive audience.
But it wasn't only the dildo that made her wantonly scream out her pleasure. Whatever the Lady had mixed into the lube, it had soaked into her skin and taken full effect. Her pussy lips, her clit, the insides of her ass, everything between her legs tingled as if soft, warm fingers were giving her the most intimate massage. This gentle pleasure was a delicious counterpart to the ruthless fucking, but in its own rights no less mind melting. No matter how much the machine overwhelmed her with the most brutal pleasures, she always needed more.
It didn't take long before Sarah got completely lost in the onslaught of sensations. Her only measure of time was how her ass slowly started to get sore, but she was far too horny to care about that. It was a problem for future Sarah. Present Sarah couldn't get enough of that perversely over-engineered dildo. Even with the copious amounts of lube the insides of her ass burned from the never ending friction. Her body screamed for a break, her mind screamed for more and her mouth screamed all that tension out into the world. Her moans and wails flowed freely, droning out even the noises of the machine.
And then it stopped.
Sarah gasped as this time the dildo pulled out completely. For a brief moment her sphincter stayed open, confused by the sudden emptiness, before finally relaxing for good. It was the only part of her that was relaxed, though. Her ass hurt from the relentless fucking, but in her agitated state she wished the Lady would turn the machine on again. With any other client she would've playfully begged for more, but Sarah was bound by the Lady's order no to speak on her own. She could only silently hope that the end of the machine meant that the Lady was finished with her work and ready for the next phase.
"You put a lot of energy into your voice," the Lady said. "It was hard not to get distracted."
Sarah didn't know if a "Thank you" or a "I'm sorry" was appropriate and decided not to say anything at all, since there was no clear prompt for an answer. Her face got hot, though, at this confirmation that the Lady apparently hadn't paid her much attention after all. The most vicious ass fucking Sarah had endured in months had been nothing but a means to get some background noise. She could've been disappointed, or even annoyed, and yet it only turned her on even more to hear how much the Lady was objectifying her.
"I'll be reading now, so I want you to stay still and not make a single noise. Can you do that?"
"Yes, my Lady," Sarah said, trying not to sound too deflated. As much as she enjoyed submitting to the Lady, her body screamed for more action. Hanging in the stocks with an aching ass and a twitching cunt and no further distractions sounded like an exercise in frustration and nothing else.
"You won't have to worry about boredom creeping in. I've got a plug ready that will keep you occupied."