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  • Robert Heinlein’s Puppet Master’s. But smut.

    Adventure by Robounit · 20 Mar 2026
  • [Two Line Summary]
    Alien stingrays attach themselves to humans to…take a vacation?

    [Detailed Description]
    Alien possession is as common as ride sharing! And humans voluntarily offer their own bodies to be controlled

    CHARACTERS

    Alien Parasites- have been a part of human culture for years and are commonplace now. Seeing a host nude with one in their back is no stranger than seeing a dog in a sweater. It might make you stare but not enough to draw attention

    Share rider- willing human hosts who allow the aliens to possess their bodies for multiple reasons. Some need extra money, some like the mental vacation of having others make decisions, others like to be used as living sex toys

    SETTING & WORLD
    Modern setting where aliens controlling hosts is common,

    The sun filtered through the bedroom blinds, painting stripes of gold across the king-sized bed. Charlotte, a curvy elementary school teacher with auburn hair piled in a messy bun, knelt on all fours in the center of the mattress. She was naked, her full breasts swaying gently beneath her, her round, generous ass tilted up. A flush painted her cheeks and chest.

    Beside the bed, her husband Mark fiddled with his phone, a grin plastered on his face. “Almost here, babe. The app says the rider’s two minutes out.”

    “I can’t believe we’re doing this,” Charlotte breathed, but her smile was wide, her eyes sparkling with nervous excitement. She’d seen her friend Melissa get possessed at a barbecue last month, watched as the polite PTA mom had gleefully squeezed her own breasts and announced to the whole yard how amazing it felt to have a “big ol’ set of milkers.” Charlotte had gone home and masturbated furiously to the memory. The idea of letting go, of being a passenger in her own skin… it made her pussy ache.

    A soft ding came from the hallway. “Delivery!” Mark chirped, and hurried out.

    Charlotte’s heart hammered against her ribs. She heard the front door open, a murmured thanks, and then Mark returned, holding a sleek, opaque canister about the size of a thermos. He set it on the nightstand, twisted the lid, and a hiss of cool, slightly metallic-smelling air wafted out.

    From within the canister, something stirred. A shape, dark and leathery, slithered over the rim. It looked like a stingray made of living velvet, about the size of a dinner plate. Two wing-like flaps undulated slowly. A cluster of short, barbed tentacles twitched near its front. It had no visible eyes.

    “Oh wow,” Mark whispered, his gaze fixed on Charlotte’s presented form. “Look at you. Perfect position for it.”

    The slug seemed to sense its target. It oozed from the nightstand onto the bedsheets, its movement a silent, fluid glide. It crawled toward Charlotte’s kneeling form.

    She felt the first touch against her inner thigh—cool, smooth, and strangely dry. It slid up, the wing brushing teasingly over her soaked pussy lips. Charlotte gasped, her hips giving an involuntary twitch. “It’s… it’s teasing me,” she panted.

    “It knows what it’s doing,” Mark said, his voice husky. He was already hard in his jeans.

    The alien creature continued its journey up the small of her back. The wings spread, adhering to her skin with a gentle, sucking pressure. It centered itself between her shoulder blades. Charlotte could feel its weight, not heavy, but present. A profound, alien focus seemed to settle on her spine.

    Then she felt it. A single, sharp barb, needle-fine and ice-cold, pressed against the base of her skull, right where her neck met her hairline.

    “Here we go, sweetheart,” Mark breathed.

    The barb punched in.

    It wasn’t pain. It was a shock of pure, white-hot sensation. Charlotte’s eyes flew wide, her back arching violently. A choked scream ripped from her throat, transforming into a guttural moan as the barb pierced her dura mater and sunk into her brainstem. Tendrils, thinner than hairs and impossibly fast, unraveled from the barb and shot through her neural pathways, wrapping, connecting, integrating.

    Orgasm detonated through her. Not a wave, but a sustained explosion. Her pussy clenched rhythmically around nothing, gushing wetness onto the sheets. Her asshole spasmed. Her nipples drew into diamond-hard points. She could feel the alien consciousness flood her mind, a buzzing, curious, horny presence pushing her own awareness gently to the side. She wasn’t gone; she was now a spectator in the theater of her own body, feeling every incredible sensation but holding none of the controls.

    Her body, now under new management, shuddered through the last pulses of the takeover climax. The hands—her hands—came up from the mattress. They didn’t move with her careful, teacherly grace. They flopped a bit, fingers wiggling experimentally.

    A voice came from her mouth. It was her vocal cords, her accent, but the cadence was all wrong—eager, boyish, dripping with gleeful discovery.

    “WHOA! HOLY SHIT! CONNECTION IS GREEN! SYSTEMS ARE GO!” The voice cheered. Her head lolled back, a goofy, ecstatic grin spreading across Charlotte’s face. “Oh man, the feed is incredible! I can feel everything! This chassis is primo!”

    Mark let out a shaky laugh, equal parts turned on and fascinated. “Welcome aboard. What should we call you?”

    The alien puppet-master used Charlotte’s brain, sifting through memories. A name surfaced: the goofy, lovable family dog from her childhood. “SPOT!” her voice announced proudly. “Call me Spot! Now, let’s see what we’re working with!”

    Charlotte’s hands—Spot’s hands now—flew to her breasts. They grabbed the soft, heavy flesh roughly, squeezing and kneading. “DUDE! Look at these bad boys! These are like… stress balls made of heaven!” Spot pinched her nipples, rolling them between thumbs and forefingers. A fresh jolt of pleasure, now filtered through the alien’s thrilled perception, made the body shiver. Charlotte, watching from the backseat, felt a dizzying echo of it, along with a warmth of profound embarrassment and arousal. He’s so rough with them, she thought, and it feels so good.

    Spot then pushed the breasts up from underneath, making them jiggle. “Boing, boing! Awesome!” He then slapped them playfully, the sound a sharp clap in the quiet room.

    Releasing the breasts, Spot twisted the upper body, trying to look behind. “Oh, baby, look at the rear bumper on this thing!” One hand reached back and smacked Charlotte’s ample buttock. A loud, stinging smack echoed, the flesh jiggling deliciously. “CLAP! That’s the sound of quality!” He smacked the other cheek, then grabbed both handfuls, shaking and squeezing the generous curves. “This ass was built for taking a pounding! Look at this dump truck! Fat and ready!”

    Still on hands and knees, Spot began to awkwardly bounce the hips, making the ass cheeks wobble in a crude approximation of twerking. Charlotte’s body moved with clumsy, enthusiastic energy. “Woo! I’m driving a bounce castle! This meat suit is incredible!”

    Spot then brought a hand around, fingers sliding through the soaked folds of Charlotte’s pussy with none of her usual delicacy. “AND THE MAIN EVENT! Oh, it’s so slippery! The previous tenant left the lights on and the pool filled!” He rubbed two fingers over her clit, sending another shared shockwave through host and rider. Charlotte’s body moaned—a long, low, delighted sound. “I am gonna wreck this pussy. I can’t wait to try it out. So many memories in here… oh, she likes it from behind, doggy style… ooh, and she’s curious about anal! Bonus feature!”

    He withdrew the wet fingers and brought them to Charlotte’s mouth, pushing them past her lips. “Taste that! That’s the taste of a ready vessel!” The body obediently sucked its own juices, Charlotte’s mind awash with the salty-sweet flavor and the surreal madness of it all.

    Spot finally seemed to settle, kneeling upright on the bed, hands on the broad hips, proudly displaying the possessed form to Mark. The stingray-shaped slug was clearly visible on her back, its wings snug against her skin, a permanent, erotic backpack. Charlotte’s face was flushed, her eyes bright with an intelligence that was not her own.

    “Okay, human-Mark! Your wife’s body is officially borrowed! She’s watching, by the way. Hi, Charlotte! Thanks for the ride!” Spot said, giving a little wave with her hand. “Now… what’s first on the itinerary? I am so ready to take this flesh puppet for a spin.”

    Quick Actions:
    1. Continue exploring the new body. Spot wants to feel every possible sensation—maybe discover the shower, or try on some of Charlotte’s clothes (poorly).
    2. Go meet the neighbors in your stolen form. Strut out the front door just like this, see who’s around and if they want to “test drive” the new possession.
    3. Go to the local alien bar “Adhesions”. A place to show off, mingle with other riders, and maybe find a playmate for this new body.
    4. Show off for Mark. Let the excited husband get a closer look, and see if Spot is interested in giving him a “demonstration” with his wife’s equipment.
    5. Inquire about an “Internal Invasion”. Spot heard about the other kind of ride-share. Maybe he wants to try entering a different way, or find a host who’s into that for next time.
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Oniohno ∙ 08 Apr 2026

This is a fun premise, i like consenting possession

Robounit ∙ 08 Apr 2026

I think it’s more exciting that way!

anon_33a665fe9960 ∙ 30 Apr 2026