A Wife Swap with a Humiliating Rule
Marina and Lucía had always been inseparable. They were barely a year apart, and since childhood there had been no secret either one kept from the other. They grew up sharing everything: clothes, friends, first disappointments. As adults, each married to someone else, that habit didn’t break. They simply changed the subject.
Marina, the older one, spoke without embarrassment about how well her husband, Diego, handled himself. She said he had a big body, strong hands, and a way of taking charge that left no room for doubt. In bed, he was the one in command, and she liked that more than she was willing to admit out loud.
Lucía, by contrast, sighed whenever the subject of Tomás came up. Her husband was attentive and sweet, incapable of raising his voice at her. What he lacked in initiative, he made up for with patience and with a tongue he certainly knew how to use.
“You’re lucky to have Diego,” Lucía said one afternoon, stirring her coffee. “In five years of marriage, Tomás has never managed to make me come the way I’d like. He tries, poor thing, but it isn’t the same.”
“Don’t think everything’s perfect,” Marina replied. “Diego is selfish in his own way. He’s so convinced that his body is a gift from heaven that he almost never bothers to give me pleasure with his mouth. He comes, does his thing, and that’s it.”
“Sometimes I wonder what it would feel like with a man like that,” Lucía admitted, lowering her voice even though they were alone. “Tomás is the only man I’ve ever known. I’ve never tried anything else.”
Marina set her cup down on the table very slowly. The idea was already fully formed in her mind before she finished saying it.
“I have a proposal,” she said, holding back a smile. “What if we swapped for one night? I’ve never told you this, but Diego has mentioned more than once that he wouldn’t mind being with you. And I very much doubt Tomás would turn down an opportunity like that.”
Lucía opened her mouth to protest, but nothing came out. Curiosity outweighed the scandal.
***
That very night, Marina brought the matter up with Diego. True to his nature, he agreed at once. But he set a condition that made it clear the exchange would take place under his rules.
“Fine, but there’s one detail,” he said, reclining on the bed with that calmness that made Marina’s skin prickle. “I’ll take care of your sister the way she deserves. Tomás, on the other hand, doesn’t touch her with anything but his tongue. No penetration. He can stick to what he knows how to do.”
“Seems fair to me,” Marina replied, amused. “From what Lucía says, she wouldn’t notice much of a difference anyway. In fact, if you want, we can make sure. I understand there are chastity cages for men. It would be… educational.”
Diego laughed heartily. He loved the idea.
Across town, that same night, Lucía had her own conversation. She explained the whole plan to Tomás: the exchange, Diego’s condition, the cage, and the fact that he would only be allowed to use his mouth.
“That isn’t fair,” Tomás complained, more hurt than angry. “He gets to really be with you, and I’m only allowed to lick your sister.”
“I’m sorry, darling, but that’s the deal,” Lucía replied with a firmness that surprised even her. “Besides, I’m going to let Diego do whatever he wants to me, in every way he can think of. So you can very well content yourself with tasting Marina. Something is better than nothing.”
Tomás lowered his gaze. He had no argument. And beneath that surrender was something he didn’t dare put a name to, something that made his pulse beat faster.
***
The plan was set for the following Saturday. The four of them would have dinner at Lucía and Tomás’s house, and at the end of the evening each person would leave with the partner assigned to them that night.
Diego arrived in an excellent mood. He complimented Lucía on how she looked, brushed her waist as he passed, and at one point gave her a playful slap on the ass while Tomás watched from the kitchen, not knowing what to do with his hands. The gesture said it all: that night, Diego felt like he owned the place.
They had dinner, drank a couple of glasses of wine, and left the dishes washed. The conversation grew heavier, charged with looks that no longer bothered to hide anything. When silence fell, the two sisters exchanged a knowing smile. The moment had arrived.
“Well, Tomás,” Lucía said, standing up. “You know what comes next. Get undressed.”
The humiliation began right there, in front of everyone. Tomás obeyed with his cheeks burning, and it was Diego himself who insisted on putting the cage on him. It was a small plastic sheath that closed over his cock with a tiny brass padlock. Tomás stood in the middle of the living room, his hands behind his neck and his eyes facing forward, while the other man adjusted the device in full view of both women.
“This will take care of your urge to get into mischief,” Diego mocked, slipping the key into his trouser pocket with calculated slowness. “Not that you could do much, but better safe than sorry.”
And with that, still laughing, he took Lucía by the hand and led her upstairs.
***
Tomás was left alone with Marina, more nervous than he had ever been in his life. She looked him up and down, savoring the power that had just fallen into her hands.
“Put these on,” she said, pulling several garments out of a bag. They were women’s clothes: a black bra, matching panties, stockings, and a garter belt.
“But… those are women’s clothes,” he stammered. “Why do I have to wear them?”
“Because you’ve never been able to satisfy my sister,” Marina replied without losing her smile. “And because tonight you’re going to do what I say. Put them on.”
Red with embarrassment, Tomás obeyed. He put on the bra, the panties, the stockings held up by the garter belt, and even a pair of high heels that felt uncomfortable on him. Each garment sank him a little deeper, and yet he couldn’t find even a scrap of will within himself to refuse.
To reinforce her control, Marina handcuffed his wrists behind his back. Then she put a collar with a leash around his neck and tugged it to test the tension.
“Much better,” she murmured with satisfaction.
She sat on the sofa, lifted her skirt, and pulled down her panties with exasperating calm. Her pussy was neat and shaved, framed by stockings almost identical to the ones he was wearing. Neither of them missed the irony.
“Don’t just stand there with your mouth hanging open,” she ordered, giving the leash a sharp tug. “Kneel down and lick it. Now.”
How humiliating all this is, Tomás thought as he dropped to his knees on the carpet.
There he was, dressed as a woman, bound and on his knees, paying tribute to his sister-in-law’s pussy, while his own wife was being taken upstairs by another man.
Tomás brought his face closer with trembling obedience. Marina was already wet, open, and shining, and the strong smell of her sex filled his nose before he even touched her. He first ran his tongue slowly over her outer lips, as if testing the ground, and immediately noticed her shudder on the seat. He licked again, longer and deeper, tracing from her entrance to her clitoris with the firm tip of his tongue, without elegance but with hunger. Marina placed a hand on his head and began pushing him toward her, setting the rhythm.
“That’s it, dog,” she panted. “Lick that pussy properly. Don’t waste my time.”
Tomás obeyed. He opened his mouth wider and licked her with determination, parting her lips with his cuffed fingers as best he could, pushing his tongue into the wet slit, tasting the salty, thick flavor of her arousal. Marina let out a short, breathy moan, then another dirtier, rougher one, while she guided his head from side to side so he wouldn’t miss a single spot.
“That’s it, that’s it… keep going, keep licking like a good submissive fucktoy,” she whispered, digging her fingers into the nape of his neck. “I want to feel you swallow me whole.”
Tomás didn’t look up. Shame burned across his face, but beneath that burn was a new urgency, the brutal throb of doing something forbidden and degrading, yet deliciously real. Marina leaned back a little, opened her legs wider, and he took advantage of it to drive his tongue in harder, moving it in circles over her clitoris, sucking up the moisture soaking his chin.
From upstairs came a commotion impossible to ignore. The bed struck the wall with a brutal rhythm, and Lucía, who had always been quiet in bed, was screaming in a way he had never heard from her in five years.
He stopped for a second, alarmed.
“I think he’s hurting her,” he said.
“Don’t be an idiot,” Marina roared, pressing his head against her sex again. “Don’t you recognize a woman’s screams when a real man is fucking her? Keep working.”
Tomás returned to his task. He licked slowly and carefully, feeling Marina grow wetter and move against his mouth with increasing impatience. He parted the entrance to her pussy with his tongue, traced it precisely, then returned to her clitoris, alternating suction and brief strokes, as he had once seen Diego do and had never dared try with Lucía. Marina was losing her composure: she breathed in broken gasps, gripped the back of the sofa, and every time Tomás got a movement just right, she let out a louder moan.
“Harder. There, yes… don’t stop, damn it,” Marina panted, digging her nails into the nape of his neck. “You have to be good for something.”
“Yes… yes… don’t stop!” came from upstairs, Lucía’s voice breaking with pleasure.
And then something almost absurd happened: the two sisters came nearly at the same time. Lucía, riding on Diego’s body; Marina, shuddering against the tongue of a man dressed in lingerie identical to her own. Tomás felt the tremor in Marina’s crotch, the wet spasm that shook her from head to toe, and kept licking as she came over his mouth with a long, open, indecent moan. The whole house filled with their voices, and then, all at once, fell silent.
At last Tomás lifted his face from between Marina’s thighs. His chin was wet and his breathing ragged. The taste of her still clung to his tongue, harsh and salty, and the excitement of watching her writhe left him halfway between shame and the miserable pride of having brought her that far.
“Get up,” she ordered, recovered now, tugging the leash toward the stairs. “You still have one more job to do.”
***
His legs trembling from the position and his nerves, Tomás followed Marina to the bedroom. As he crossed the doorway, he found the scene he had spent all night imagining without daring to do so: his wife sprawled across the bed, her legs open, her body shining with sweat and the unmistakable evidence of what had just happened.
Diego stood between her legs with his chest puffed out in satisfaction, while Lucía still writhed, breathing raggedly, her hips limp after receiving a relentless fuck. Her pussy was still red, swollen, and wet from her recent orgasm and from the brutal way Diego had used her. Tomás swallowed. The cage remained locked and heavy, reminding him how useless his own erection was, trapped inside that plastic.
“Clean her up,” Diego said from the headboard, in a tone that allowed no argument.
“Come on, where are your manners?” Lucía added, still breathless. “You haven’t even thanked Diego for taking care of me the way you don’t know how.”
“Thank you,” Tomás murmured, barely audible.
“Thank you, sir,” Marina corrected him, tightening the leash.
“Sorry… thank you, sir,” he repeated.
More submissive than at any other moment in his life, Tomás climbed onto the bed and positioned himself between his wife’s legs, which were covered in stockings almost identical to his own. He bent down and began licking the pussy he had kissed so many times before, except that tonight everything was different, and he knew it perfectly well. Lucía still had her pussy open, sensitive, and wet with Diego’s cum, and Tomás ran his tongue along the slit with a mixture of reverence and desperation, gathering up the other man’s semen and moisture as she let out a long sigh.
“You’d better get used to it,” Diego said, watching him with a crooked smile. “From now on, this is going to be your job.”
“Yes, my little husband,” Lucía added, stroking his hair with a tenderness that hurt more than any insult. “From now on, Diego takes care of me. You’re good for this, and only this. Understood?”
“Yes, ma’am,” Tomás replied.
And as he continued performing his new function, he heard the two sisters begin laughing and talking about next time, as if everything had always been this way. For the first time in a long while, Tomás knew exactly where he belonged. And the most disturbing thing of all was that he was no longer sure he wanted to escape it.
