In A Tight Spot

An enterprising stowaway on a spaceship gets caught in a trap halfway through climbing into a maintenance vent. The AI of the ship she's trying to hide in serves her up to the spaceship's alien crew on a silver platter.

This story was a request by an anonymous fan - reach out to me through the Feedback system if you would like to discuss your own request.

Content Notes: Noncon x Stuck in a Wall × Stuck Porn × Gangbang × Tentacle Dick × Tentacle Sex × Knotting × Overstimulation × Glory Hole × Free Use × Size Difference × Size Kink × Entrapment × Creampie

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Frankly, it wasn't Sabrina's fault that some freighters shortsold themselves on their AI security. The universal flash ID she was using was a good bit of code and had cost her a pretty penny, but in the end it just flipped the little yes switch when the shipboard AI pinged to see if she was on the passenger list. Or something like that, she didn't code herself or really understand it. Any really good AI would be able to counter that, which is why Sabrina didn't try it on the good ships.

This was a dinky little ancient freighter, though, and when she flashed her ID, there was a brief pause. At first she thought she'd been caught and got ready to make a great excuse about getting the ship's name wrong, but then the approval came back. Just a slow ship, then. Lag. She slipped aboard the ship when the AI opened the hatch.

That was the first hurdle down. The second hurdle was making sure that no actual people caught her. Most AIs weren't even worth being called AIs, they were just data-pushers. Box checked, no further questions. A person, though, could ask uncomfortable questions. Questions like "Who the hell are you?" "How did you get on our ship?" and "How would you like it if you got kicked out this airlock without a rebreather?" None of which she cared to be asked.

So the second hurdle. Freighters of this model had maintenance and ventilation ducts around the engines and storage rooms just big enough for her scrawny little body to fit in. If she stayed quiet and out of the way and cleaned up after herself, then she could make it to the next station without trouble. Hopefully they never even discovered she was onboard, or at least didn't discover it until she'd hopped to another ship entirely.

The maintenance ducts on this freighter were sealed off by telescoping grates, with a spiral pattern that opened from the inside out, which was kind of a weird choice. Unnecessary point of failure, when ducts like this mainly just needed a hatch. There didn't seem to be a manual release either. Maybe they needed to run wires through or something sometimes and didn't want to open it up all the way? She'd have to keep that in mind.

For now, she pinged the AI, and flashed her ID with a mechanic designation. Access requested, perfectly legitimate reasons, don't worry about what they are. Let me in, pal.

The AI granted access, quicker this time, and the grate telescoped open. She patted the outside of the maintenance duct affectionately. What a friendly and accommodating bot. This was going to be great. She slung her bag through ahead of her and crawled in after it.

Or tried, at least. She got about halfway in before the telescoping grate suddenly snapped shut, with a metallic sound and an impact that scared the shit out of her.

"Oh, fuck!" she yelped, before her body could register that she had not, in fact, been cut in half yet. The grate was pressing into her skin and clothes - digging in a little, actually, ow - but it wasn't closing any tighter. "Stupid, glitchy-ass freighter, hang on," she said, and fumbled for her flash ID.

You don't need that, whispered a cosmic voice directly into her skull. Or, more accurately, her heavily fucking firewalled, offlined fucking implant chip.

"What the fuck," Sabrina hissed.

Something pinged her chip with a soundless, airless ping that nonetheless seemed to reverberate in her brain. She fell immediately silent. This wasn't a person, was it? It felt like a bot.

A stowaway in my vents. Wandered right into where it didn't belong. Where did it come from, I wonder? The affect of the voice in her mind had an identifiable edge of amusement in it, which would have been enough to panic her on its own if she hadn't already been terrified. Never a good sign when bots started thinking things were funny. That's how you got rogues annihilating colonies and such.

"I'm a mechanic authorized on the passenger list," she said, without much hope. "Override vent closure, I need to make an emergency exit." She was getting right the fuck back off this ship as soon as she got out.

The ship's AI laughed at her. Not out loud, just a pulse of stronger amusement pinging her chip, a stuttered sound playback of little clicks and buzzes. Her eyes started watering, overwhelmed by it, and she wriggled in place, helplessly. The vent flexed around her, but did not allow her to move.

"Let me go, I'm sorry, I'll leave," she begged, switching tactics immediately. With a person, she'd be ugly-crying by now, but that didn't really seem like something that was going to impress a rogue AI. "I wasn't trying to hurt anybody, I just need to get to Ganymede IV and I don't have any money, I wasn't going to cause any trouble. Don't call the cops, please."

Don't worry, the AI said. We won't.

Oh, shit. "No, wait, I changed my mind, please call the cops," she said, hurriedly. "What do you mean, we?"

Something touched her thigh, and she shrieked, kicking out. There was a burst of laughter outside the vent, muffled and seeming distant, and someone caught her leg, holding it in the air.

My crew does get bored on these long trips, the AI said.

"You can't be serious," she said, disbelievingly. A hand slid up the inside of her thighs, over her thick canvas trousers. Despite herself, she flushed hot, the contact seeming to sear her skin.

You'll get to Ganymede IV, but not without earning your way, the AI continued.

Voices outside, discussing cheerfully. They were speaking a dialect of Intergalactic Trade that she wasn't familiar with and didn't have downloaded to her chip, and she couldn't exactly go online to download it with an AI squatting in her transistors. What she could pick up wasn't promising.

"-cut it?" she caught, and then a burst of unintelligible words and laughter. Someone tugged sharply on her pants, which went absolutely nowhere, given how tightly they were caught in the vent cover.

"Wait, fuck, no, don't cut them off," she said, dismayed. "I only have the two pairs."

This appeared to amuse the AI a great deal. It laughed at her again, that strange voiceless electronic laugh, and the vent cover rippled around her waist, opening slightly.

She promptly tried to wiggle forward away from the hands around her ankles, but was effortlessly hauled back, someone else catching her other leg. They worked her pants and underwear - kind of embarrassingly threadbare, she hadn't been planning on anyone seeing this pair - down her thighs, stripping her bare from the waist down. She instinctively tried to squeeze her thighs together to cover herself, but her legs were being held apart, and the mouth of the vent closed tightly around her waist again.

There. Not cut. Say thank you, the AI purred at her, self-satisfied.

"Thanks, I guess," Sabrina said, squirming uncomfortably at cold starship air on her bare ass.

Something warm and wet touched her pussy, running up and down the line of it, and she gasped at the shock of being touched, arching and trying to wiggle again. This did nothing except hurt where the vent cover was biting into her hips and provoke more laughter from outside. Someone - maybe a woman, or someone using a female voice modulator? - said something that could have been "cute," which felt rude under the circumstances. Whatever was touching her just followed her movements, the restraints on her legs spreading her thighs wider. A tongue? Maybe? Was someone eating her out?

The possible tongue traced over her again, and then pressed a little more firmly, sliding between her folds. She could feel lips moving over her now, the prickle of teeth. There was something a little odd about it, but she couldn't place it, distracted by the tongue flicking over her clit, sending a shocked jolt of pleasure up her spine. She could feel her body heating up, growing wet, as the tongue lapped over her cunt, and she folded her arms under her head, burying her face in her elbow. It seemed important to maintain some dignity by trying not to make any noise or rock back into the touch.

She yelped despite herself as the tongue abruptly thrust inside of her, far deeper than it should reasonably be able to get, stretching her open. It was strong and hot and prehensile inside her, filling her up, moving inside her in rippling undulations. Her cunt clenched instinctively, either trying to keep it out or possibly - embarrassingly - draw it deeper in.

She could feel the teeth a lot more openly now, sharp and pricking at her skin. This was not another human. Definitely an alien. Hell if she knew what kind, though.

The AI flicked idly at her implant chip, pinging her with an audio clip of her own yelp, backed by its increased amusement.

"Fuck off," she said, impotently, as that long tongue dragged back out of her, friction and heat and motion making her stifle a groan. For a moment she was just open and wet and empty, saliva and her own fluids cooling in the hallway air, and she braced herself, waiting for what came next.

There was some shifting behind her, and then the press of warm hips against hers, something just as warm and wet and mobile tracing over her opening. The slender tip of a tentacle slid easily inside her, barely thicker than a finger, but it thickened rapidly as whoever was behind her thrust in deep, forcing her open around the smooth shaft of the thing. Her cunt twinged and stung with the stretch as whoever was fucking her buried their tentacle to the thick base.

They cursed out loud, a little breathless as they fucked her, and Sabrina cursed right along with them, The tentacle squirmed inside her, rippling, the dextrous tip of the tentacle writhing inside her, seeming almost purposeful. It doubled back on itself, filling her even fuller, and then the tip rubbed over a spot inside her that made her shout and try to buck her hips, trying to either get away or get much more of that.

"There," said whoever was fucking her, muffled and breathless, and the tip of the tendril immediately and ruthlessly targeted the spot, kneading and rubbing into it. It felt really fucking good, made the stretch and the fullness and even the twinge of pain feel good, and she hated it on principle. She couldn't get away from it, just had to lie there pinned on her belly in the vent and take it.

She sobbed when she came, pulsing hard and earthshaking, her mind whiting out briefly as she clenched over and over around the tentacle filling her. She heard the groan from outside the vent as the owner of the tentacle pressed in deeper, and the maddening thing finally stilled. There was a pulsing inside her as the crewmember came inside her.

Good girl, the AI purred at her. Did that feel good? Your biometrics spiked. It gave her the readout, the spike in her heartbeat, her breathing, even her brain activity.

She squeezed her eyes shut, childishly refusing to acknowledge it.

The tentacle slid out, and she felt a surge of wetness follow after it, the crewmember's come leaking down her thighs. There was a great burst of excited chatter, and then someone else stepped up behind her.

Great, scaly hands wrapped around her hips, claws digging into her skin, and she felt the fat, blunt tip of a cock prodding at her slit. The size of it made her quail, renewing her struggles to escape. Just as futile as before. Her legs were spread, her pussy on offer for anyone who wanted a taste whether she liked it or not. She could feel her hole clenching and fluttering, trying to keep the cock out. The tip of the cock pressed inexorably against her hole without a concern for her twitching and squirming, and she felt herself stretch wide around it, and then the first... segment? was in. She could feel it wasn't a smooth shaft. There was another ridge after the first, a little wider it seemed. Another shallow thrust popped the next segment into her.

It could have been painful - would have been painful, if not for the tentacle that had worked her open and filled her so full of slick come to lubricate the way. If not for the way the crewmember attached to the cock seemed to be easing her into it, slowly, segment by widening segment. They bottomed out before all of it was in, she thought, the tip of the cock bullying at her cervix so that she shouted and tried to recoil, even as another ridge tried to press inside. The crewmember paused, did a couple shallow thrusts, as though testing the depth they'd managed to reach, and then pulled out and did a real, deep thrust. She bit down on her arm to muffle a scream as the ridges dragged against her insides, out and then in, harsh friction tugging at her walls and opening.

The crewmember paused for a moment, and fingers pressed and prodded at her hole, as though checking for damage. Finding none, the claws returned to her hips, and the ridged, fat cock thrust rough and fast and hard, almost animalistic. God, she'd never felt so fucked in her life. Every inch of her cunt was alive and sore and stimulated, every dimension of it stretched to what must be its limit. She could hear herself being fucked even through the barrier of the vent and her own flesh, wet squelching noises as the battering thrusts forced the tentacle's come and her own slick out of her. She could hear her own animal noises as well, little uncontrollable unh, unh, unh sounds every time the crewmember thrust in.

She squeezed her eyes shut tight for a moment, and then opened them again to stare dazedly into the close dark of the vent. It felt like the fucking was taking place in a different dimension to the one she was actually in, like her cunt was its own entity only tangentially connected to her. If anyone had asked her, she wouldn't have been able to guess how long the fucking lasted. Forever? A few minutes? By the time the crewmember grunted and stilled inside her, more wet heat joining the mess they hadn't managed to fuck out of her, she felt hollowed out. The slow drag of their cock out of her the final time punched one last whimper out of her, and then she was once again empty and exposed to the air. More come dripped out of her. She must be a mess.

Sabrina's hole was sore and her clit ached. The need to come again struggled with the overstimulation and soreness. She didn't want anyone to touch her anymore. She needed them to touch her. She battled internally with it for a moment, and then a new set of fingers was touching her, and she remembered she didn't have a choice. It was almost a relief. All she had to do was lie here and let it happen, and she didn't even have to decide if she was going to let it happen.

There was a more feminine voice behind her this time, growling and purring at her. Her accent was thick enough that even the words that sounded almost familiar were hard to pinpoint. Sabrina didn't bother trying, just let the sound of it wash over her, and then almost screamed as those fingers targeted her clit directly and ruthlessly, pinching it, rolling it between the fingertips. Blunt claws scraped over her, intense and harsh. Sabrina squirmed, trying to draw away, but wasn't able to.

A low, barking laugh, and then a smooth, slender cock jabbed into her. It was almost soothing after the wreck the bigger, ridged cock had made of her. This one was soft and slick and wet, maybe as wide as a couple of fingers. It drove into her with a lazy rhythm, and the fingers on her clit bullied her relentlessly towards an orgasm. At first playing more than anything, making her squirm and make noise and testing reactions.

Finally, the crewmember seemed to get a little bored. She huffed, her weight coming to settle harder on the backs of Sabrina's thighs, and shifted her hand between Sabrina's thighs. A callused thumb, almost leathery, dragged in firm, repetitive circles over her clit. Between that and the smooth, rolling drag of her slender cock, it was impossible to resist. Sabrina's breathing came tighter and tighter, panting, and her thighs tensed. The crewmember purred at her, and sped up, moving harder and quicker.

Sabrina tipped over the edge and came so hard she stopped breathing, her legs tensing and her clit pulsing and her pussy clenching down hard and rhythmic. It jerked a loud moan out of her, and the crewmember behind her groaned in response, pumping in quicker before stilling. Sabrina twitched and squeaked as the fingers kept moving on her clit, oversensitive now, but the crewmember kept playing with her.

"Ah, fuck, I can't," she said, out loud, and was surprised to hear her voice was thick with tears. Her face felt wet, her eyes aching. "I can't, please, it's too much, make her stop."

You're not at risk of damage, the AI said, pitilessly. You put yourself into this situation. Why did you do that if you didn't think you could take it?

This was so patently unfair that Sabrina was briefly speechless.

Only briefly. "I didn't put - fuck, ah, no - I didn't - You put me in this situation!"

This made the AI laugh at her again, but Sabrina was distracted by the crewmember finally leaving her sensitive, aching clit alone and pulling out.

Her cunt wasn't empty for long. A broad hand gripped her waist, and the tapered head of another, thicker cock caught and slid into her with casual, perfunctory ease. This one was thick enough to stretch her again, make her opening sting with renewed soreness from her previous fuckings.

Sabrina put her head down and waited for it to be over. It felt like any arousal she had had was drained out of her from coming so hard. It wasn't like it mattered whether or not she was getting off on it. She was just a tight, wet hole for the ship's crew to use for their amusement, and she felt like it now.

How many more crewmembers were there? It was a week-long flight to Ganymede IV. Would she just be here the whole time, cocks pumping in and out of her, cum filling her and spilling out of her constantly, until they arrived and she was dumped off the ship loose and leaking without any of them ever even seeing her face? Would they even remember her, or would she just be one more little amenity that the ship had served up for them on a silver, vent-shaped platter?

She was jolted out of her imagination by the sensation of some resistance as the crewmember fucking her pulled out to thrust back in. A greater stretch, her cunt being forced to shape itself around something bulbous at the base of the cock. The stretch grew rapidly, swelling as the crewmember's thrusts slowed. Sabrina yelped as the growing - knot? Was that a knot? - pressed at her entrance, and then forced its way inside. The crewmember buried themself deep inside her, the head of their cock nudging at her cervix, and rocked in shallow, rolling thrusts as the knot at the base of their cock grew inside of her. It felt enormous, filling up her guts, filling up every bit of spare space and then growing a little further until she was strained around it. She could feel them coming inside of her in hot, wet pulses.

The crewmember slowly pulled back, as if testing, and she said, "No, no, no, fuck, don't," with a bolt of genuine alarm as the knot inside of her strained at her hole. The pressure was pulling her backwards, but there was no give from the vent. She'd heard about knots and alright, maybe seen a few porn clips. If the crewmember pulled out now it was going to hurt.

Mercifully, the crewmember paused, and there was some chatter. Then the vent around her waist opened up, and big clawed hands came in after her and grabbed hold of her waist instead, dragging her out. She scrabbled and clawed at them with her fingernails, and then grabbed hold hard as she was dragged out of the vent by the knot in her cunt and the hands on her.

The spaceship lights were blinding after the pure dark of the inside of the vent, and she squinted hard, blinking rapidly as the crewmember hauled her upright. They were a lot larger than her, large enough that when they stood upright, still locked inside her, her legs dangled. She spared a moment for gratitude that most of her weight was being held by the hands around her waist, and grabbed onto the crewmember tightly in case they decided it would be funnier to stop holding her up.

The hall was full of a disreputable looking bunch, mostly aliens of every kind of species she could imagine, no uniforms in sight. A lot of them had their cocks out, jerking themselves off casually. One of them, furry and small-eyed with a short, bristly mane and a too-wide smile full of sharp teeth, reached out and hooked claws into Sabrina's shirt and the compression shirt under that, tearing them open to let her tits fall loose. The crewmember holding Sabrina laughed at that, and bounced her on his cock a few times, letting the knot pull at her opening and then sinking deeper into her. The change in angle made him feel even deeper than before, and she couldn't help but grunt at the impact.

The furred crewmember pinched Sabrina's nipple between familiar, terrible fingers, rolling and rubbing, and Sabrina cursed herself for the jolt of arousal, the way her cunt clenched around the knot spreading it open.

The AI spoke to her again. Why don't I upgrade your fare? I'll assign you your very own room on the ship. Meals included, of course. All you have to do is let the crew access you whenever they like, and do whatever they want you to do. Can you do that for me, Sabrina?

It was using the sort of calm, patient, clearly enunciated robotic voice that a medical droid or a caretaker droid might use for a small child. Humiliated heat spread through Sabrina's body. So this was the game, huh? She was going to have to just - just let them fuck her whenever they wanted. Open her legs on purpose?

Sabrina felt a sudden burst of energy in her worn-out body, and struggled with a force she hadn't expected herself to be capable of, kicking and screaming and lunging to try and bite the furry crewmember in front of her, who rapidly snatched her hand away. There was a burst of laughter among the crew.

"Fuck you! Make me!" she said, and kicked the crewmember holding her in the thighs, digging her fingernails into his wrists and twisting around to try and bite him too. She could feel that his knot was going down. If she just fought him hard enough, she could wriggle free now, she was sure. And then do - something?

As you wish, the AI said. Just remember that you could have made this easier on yourself.

The crewmember holding her shifted his grip, pinned her arms by her sides, and her struggling redoubled as she saw what he was doing. There was no use. There was nothing she could do to stop him as he pushed her headfirst back into the vent. The familiar trapdoor grip of the vent door closed around her hips again, and she was back in the dark.

The knot inside her tugged free, finally, with a thick, burning stretch, and then finally came loose. The cum inside her gushed out down her thighs. She was empty again.

We'll reevaluate once you've calmed down, the AI said. Its tone was almost indulgent.

"Go to hell," Sabrina said, and braced herself for the next cock.