Swapping with the Neighbors

Harriet peeled the zero-G harness from her thighs and watched the last silver motes of the apartment’s gravity field settle back into the floor. Twenty-four, married three years, and still flushed from the way Marco had taken her ass while the neural implants fed her his pleasure in overlapping waves. He was twenty-five, long-limbed and grinning, wiping lubricant from his cock with a molecular cloth that dissolved the mess into scentless vapor.

“We did everything again,” she said. “Every hole, every position the module knows. I came so hard I bit the strap.”

Marco kissed the mark on her shoulder. “And it was perfect. And I still want more than us.”

They had said it out loud for weeks. Bi-curious, adventurous, finished with the limits of two bodies even when those bodies could share sensation through the implants and float weightless while they fucked. The new neighbors had made the wanting specific. Greta and Bruno, same age, same building ring, had been anything but discreet. Last night a holographic mouth had bloomed over their kitchen counter and licked the air in Greta’s exact shape before dissolving into Bruno’s low voice: Come over. Bring the appetite. We’ll match it.

Harriet’s cunt tightened at the memory. “They want the swap. Mouths, cocks, cunts, asses. All of it.”

“Then we go,” Marco said. “This afternoon. No limits if they mean it.”

She sent the reply before she could pretty it up. We’re coming. We want everything.

The answer arrived as a pulse against both their implants, warm and unmistakable: Door’s open. Synchronizer’s primed. Don’t wear anything you mind losing.

Greta met them at the threshold of the modular living pod, twenty-four, dark hair pinned up, a thin robe already half-transparent. Bruno stood behind her, twenty-five, broad through the chest, smiling like a man who had been hard since the message landed. The pod’s walls were sleek pearl panels, the air scented with clean ozone and skin.

“You’re beautiful,” Greta said, looking Harriet over without apology. “Both of you. We’ve been teasing on purpose.”

“We noticed,” Marco said. His voice had gone rough. “We want it. All combinations. One on one, two on one, everyone at once. Mouths, dicks, cunts, asses. If that’s what you’re offering.”

Bruno’s hand settled on Greta’s hip. “That’s exactly what we’re offering. Say it back so the room logs consent.”

Harriet did not hesitate. “I want your cock in me, Bruno. I want Greta’s mouth and her cunt. I want Marco fucking whoever he reaches. I want to feel all of it.”

“Same,” Marco said. “I want Greta. I want Bruno’s cock in my mouth if he puts it there. I want Harriet used while I watch and while I don’t. Full swap. No holding back.”

Greta’s smile went sharp. “Good. Then look.”

She touched a panel. A ring of soft light rose from the floor, four slender filaments unfolding like polite metal vines. “Prototype synaptic pleasure synchronizer. Clips at the base of the skull. Once it’s live, every thrust, every lick, every clench hits all four of us in real time. You feel what I feel. I feel what he feels. No secrets, no lag. You can drop out by saying stop. Anyone says stop, it cuts.”

“We won’t,” Harriet said.

Clothes went next. The pod’s molecular fabricators drank the robes and shirts and pants in a shiver of light, leaving four naked adults in the pearl glow. Harriet’s breasts were high and flushed. Marco’s cock was already thick and lifted. Greta’s cunt was shaved smooth and shining. Bruno’s cock hung heavy, the head dark, a bead of precum catching the light.

Greta fitted the first filament behind Harriet’s ear. Cool, then a bright click of connection. Bruno did Marco. They clipped each other last. The synchronizer hummed, waiting.

“Activate,” Bruno said.

The world doubled.

Harriet gasped as Greta’s arousal slammed into her nervous system—wet, aching, hungry—and under it Marco’s cock-throb and Bruno’s heavier pulse. Four hearts. Four sets of nerves. She could feel Greta’s nipples tighten because her own did. She could feel Bruno’s balls draw up because Marco’s did.

“Fuck,” Marco breathed. “I can taste how wet you both are and nobody’s even touched me.”

“Then touch,” Greta said, and pulled Harriet down onto the wide floor pad.

They started mouth to cunt without ceremony. Harriet swung a leg over Greta’s face and lowered herself, and Greta’s tongue pushed up into her at the same moment Harriet buried her mouth in Greta’s slick folds. The synchronizer made it vicious and perfect. Harriet tasted Greta and felt her own cunt being eaten; Greta licked and felt the echo of that lick on her own clit. They moaned into each other, sixty-nine locked tight, hips rolling.

Marco and Bruno did not wait. Marco knelt behind Greta, lined his cock up with her cunt, and sank in while she was still licking Harriet. Bruno took Harriet from behind, thick head spreading her, and drove deep. The device turned the double entry into a shared lightning strike. Harriet cried out against Greta’s clit because she felt Bruno filling her and felt Marco filling Greta and felt Greta’s tongue and felt her own tongue and felt both men’s pleasure cresting as tight heat.

“Harder,” Greta said, muffled and filthy. “Fuck her. I want to feel your cock in her ass next, Bruno. I want to know what she feels when you wreck it.”

Bruno pulled out, spat, and pressed into Harriet’s ass instead. She pushed back onto him, greedy, and the stretch sang through all four bodies. Marco groaned and fucked Greta faster, chasing the echo of that tighter hole.

They broke and reformed. Harriet climbed onto Bruno’s cock, facing him, and sank down until her cunt kissed his base. The synchronizer fed Bruno’s fullness back into her so she felt stuffed from both sides of the sensation. Greta dropped to her knees beside them and took Marco into her mouth, throat opening, eyes up. Harriet rode. Greta sucked. Every wet sound hit twice.

“Switch,” Marco said, voice shredded. “I want her cunt. I want to watch my wife take you.”

Harriet stayed on Bruno. Marco pulled Greta up, bent her over the pad, and shoved into her from behind. Greta reached between her own legs and rubbed her clit, then reached farther and wrapped her fingers around the base of Bruno’s cock where it disappeared into Harriet. Four bodies, two couplings, one circuit of pleasure.

They did not stay paired. Greta crawled under Harriet, mouth open, and licked where Bruno’s cock stretched Harriet’s cunt. Harriet came like that, shaking, the orgasm ripping through the link so hard Bruno swore and Greta moaned and Marco fucked deeper just to ride the wave. Before it faded, Harriet slid off, turned, and presented her ass again. Bruno took it. Marco pulled out of Greta and fed his cock to Harriet’s mouth so she was spit-roasted, ass full, throat full, while Greta straddled her back and ground her wet cunt against Harriet’s spine just to feel the tremors.

“Both of you in me,” Greta demanded. “Cunt and ass. Harriet, sit on my face. I want to drown while they split me.”

They moved fast. Greta lay back. Marco worked two fingers into her ass, then his cock, slow until she nodded wildly. Bruno lined up at her cunt and pushed in beside the fullness already there, double penetration sealing her open. Harriet swung over Greta’s mouth and ground down, cunt smearing Greta’s lips, clit dragging on her tongue. The synchronizer went white-hot. Greta felt both cocks and felt Harriet’s taste and felt the men’s strain and the women’s clenching, and she came so hard her whole body bowed. The orgasm detonated in all of them. Bruno kept thrusting through it. Marco did too. Harriet rode Greta’s tongue until a second climax chased the first, smaller and meaner, and she ground it out without mercy.

They rotated the filling. Harriet on her back, Bruno in her cunt, Marco in her ass, Greta kneeling over her face so Harriet could eat her while being split. Then Greta on all fours, Harriet underneath in a messy sixty-nine, both men taking turns driving into whichever hole was offered—Greta’s ass, Harriet’s cunt, Greta’s cunt, Harriet’s ass—switching every dozen strokes so nobody cooled. Mouths stayed busy. Harriet sucked Bruno while Marco fucked Greta’s ass and Greta licked Harriet’s clit. Marco took Bruno’s cock into his mouth for a long, filthy stretch, cheeks hollowing, while the women watched and fingered each other and the synchronizer poured Bruno’s pleasure straight into Marco’s gut until Marco pulled off gasping and laughed, wrecked and hard.

“All of us,” Harriet said. “No one left out. Every hole working.”

They built the knot. Bruno on his back. Greta sank onto his cock, facing his feet. Harriet straddled Bruno’s face and leaned forward so her mouth could reach Greta’s ass and lick around where she wished a second cock would go. Marco knelt behind Greta and pushed into her ass, sandwiching her between the two men, and Harriet’s tongue flicked his shaft and Greta’s rim and Bruno’s balls in turn. Then Harriet shifted, turned, took Marco’s cock from Greta’s ass into her mouth for three wet strokes, and guided it into her own cunt while she stayed bent over Bruno’s mouth. Greta, freed for a moment, dropped beside them and pushed two fingers into Harriet’s ass, then replaced them with Bruno’s cock when Harriet swung back, so Harriet was the one double-stuffed while Greta sucked Marco and rubbed her own clit against Harriet’s thigh.

Sweat made them shine. The pearl walls reflected four tangled adults, cocks glistening, cunts swollen and used, mouths shiny. The synchronizer did not let anyone hide. When Bruno’s cock jerked inside Harriet’s ass, Greta felt the pulse in her own empty hole and whined for it back. When Harriet came again, gushing over Bruno’s tongue, Marco felt the clench on a cock that wasn’t even in him and drove harder into Greta’s throat until she gagged and swallowed and pushed for more.

They finished the circuit the way they had promised. Marco in Greta’s cunt. Bruno in Harriet’s cunt. The women kissing, filthy and open-mouthed, trading the taste of each other. Then a turn: Bruno in Greta’s ass, Marco in Harriet’s ass, both women on their knees shoulder to shoulder, holding hands because the sensation was too big and still begging for deeper. A last rearrangement: Harriet flat, Greta on top of her cunt to cunt, grinding, while Bruno fucked Greta’s ass and Marco fucked Harriet’s cunt from the side, the four of them a single sweating machine. Orgasms stacked. Harriet screamed into Greta’s mouth. Greta sobbed and came and came. Bruno buried himself and flooded Greta’s ass, the hot spill echoing through the link until Marco couldn’t hold and pumped Harriet full, cock kicking, and the shared release rolled through all four bodies like a system crash made of pure pleasure.

The synchronizer dimmed on its timer, filaments cooling, the doubled world thinning back to four separate nervous systems still ringing. They collapsed in a heap on the pad, limbs overlapping, cum leaking from cunts and asses onto thighs and the floor, breath harsh.

“Success,” Greta said, voice raw. “Overwhelming. We do it again.”

“Next weekend,” Bruno said. “Same device. More time. Every combination we didn’t finish.”

Marco laughed once, spent. “We’ll be here. Hard and ready.”

Harriet wiped her mouth with the back of her hand, tasted all of them, and smiled like a woman already planning the next wrecking. “Good. I want both your cocks in my ass and cunt while Greta sits on my face and Marco fucks her throat until she drools on my tits. Bring lube. I’m not done being used.”