The sub knelt naked and bound in the center of the room. Face down, eyes averted from the women who watched him, he struggled to understand what they wanted from him. They seemed to expect him to do something. Something that he knew he wanted to do but shouldn't. Shouldn't want to, not shouldn't do it. He'd do it alright, he knew that much, and he'd feel ashamed of himself. But he knew he'd do it as often as they wanted, just as soon as he remembered what it was.
He knew he'd feel exposed and vulnerable, and breathless with the forbidden nature of it. What he was supposed to do remained elusive, but he had some clues.
His head was encased in a leather hood. The leather smelt familiar, exciting. There were open eye holes, but he knew blinders were attached to either side, so his vision could be curtailed. His mouth hole was zippered shut for now. Leather wrist restraints bound his hands together behind his back and his cock was locked into a short metal cage.
Maybe the familiarity of his position helped him realize where he was, or maybe the swelling pressure of his cock trapped inside its prison released some kind of hormone. Regardless of the trigger, he suddenly recalled his purpose. He was here to serve. Intuitively he crawled on his knees to his Mistress, grateful for her reassuring presence and hopeful that the pressure between his legs would soon be relieved.
On his knees at Sofia's feet, the sub turned his face up to his Mistress and waited. She reached down and unzipped his mouth.
"Start with Mistress Valentina, sub. She wants a repeat of yesterday. When she is finished with you, crawl back here and I will instruct you. What are you?"
"I am your worthless piece of ass Mistress, waiting to serve you."
"Good. You learn quickly. Get to work,'worthless piece of ass', the faster you satisfy Mistress Valentina, the faster you can be of service to me."
I watched the sub struggle toward Tina's open thighs with his tongue out. Slut. I had made a good decision to bag this prey at the party last week. He was so compliant, and now he was showing excellent progress toward becoming a pain slut.
As long as he wasn't allowed to become too self-abusive, he could be a valuable commodity. Pain sluts are simple to reward. They are generally obedient, fun to humiliate and entirely useful for orgasms. I watched this one on all fours licking Tina, oblivious to the enticing target his ass made.
I recalled the evening I first spotted him, vulnerable and needy. He got hard so fast. I wanted to see that again, so I reached both hands between his legs.
"Spread!"
The bitch stuck his ass out as he spread his knees apart. I coated a finger with saliva, slipped it into his dildo hole and began working him toward accept larger inserts.
I had been teaching him to ignore the fine line between pain and pleasure by conditioning him to savour having his ass spanked while he was being milked. Being spanked while I jerked him turned out to be especially effective in training him to seriously confuse pain with pleasure.
He fed between Valentina's legs, wallowing deep in her pussy, grunting with the effort. I squatted behind him and played with his balls.
"Spread wider," I said quietly, careful not to break the sub-space bubble of depravity that fueled his compliance and fed his addiction.
The initial confusion of the experimental drug I had given him seemed to be abating, leaving the sub even more submissive than usual and definitely more horny. I slid my hands between the slut's spread thighs and cupped his genitals. Grunting with pleasure, he settled into position with his head buried and his ass arched.
"Tina, do you need him to lick faster?"
"No Cariño, lo estoy siento bien, gracias. I am fine, but spank him for me, will you? I want him to know that my pleasure and his pain are the same thing."
"Si, he needs to learn to want the pain."
"CRACK!"
Sofia's open palm connected loudly with the sub's ass and spurred him on. But Tina trapped his head between her thighs and stopped him.
"No puta! Slower! This time being spanked does not mean lick faster. You must learn to endure a spanking while you are servicing others. Your ass must be open for other uses when your mouth is busy. Continue."
The sub resumed licking and Sofia continued spanking him. The rhythmic echo of ass-slapping was occasionally interrupted by the sub's whimpering. Mistress Valentina moaned and squeezed the sub's head between her thighs.
"Si puta, like that. I want to hear your pain puta. Show me how your pain can be my pleasure. I know your cock is hard. No! Don't check estúpido! Lick! Sofia, por favor, make him lick faster."
"Huuh!" Tina ground her hips against the sub's face, forcing his tongue deep into her pussy. Sofia's pet licked faster, feeling the tension build in his Mistress.
"Huuh!" The sub's legs shook as his owner spanked him. Somehow the pain was becoming erotic. It hurt, but he didn't want it to stop. He felt disappointed when she finally decided to stop spanking him. But he was servicing his Mistress's needs and that's what really mattered. His cock wanted to cum again. Would she notice?
Mistress Sofia soothed the sub's burning ass with her hand. The same hand she used to punish him. In time he would learn to treasure her touch, despite the pain or maybe because of it. She would train him to need the pain as much as he needed to cum.