The Medical experiment 1. The laboratory - preparation Helena was 22, intelligent, happy, and highly sexed, all of which made Mike, her boyfriend, very happy. She was about 5'5 tall, with light brown hair with blonde highlights, and light blue eyes. Her skin was very fair and smooth. She did quite a lot of swimming and other exercise, and was very supple and slim as a result, with firm 34c breasts, a toned tummy, and a hard small bum and long, slim and strong legs. Mike was a medical researcher, working in a small lab for a doctor who had some pretty weird ideas. He had met the doctor in fact through the internet, as they both shared an interest in pretty wild sexual fantasies as well as medical research, and they had worked together for a while now. When he had first started sleeping with Helena, he had started wondering if he could ever get her to go along with some of the wilder things that he and the doc had sometimes talked about. Helena was the best fuck that Mike had ever had, always ready and always willing to try things out. As he sat with her in the bar, with a number of other people from the lab and some other friends from the internet group he was a part of, he felt himself going hard as he remembered the first time he had taken her up the ass. It was the first time for her too, and he remembered her screams as he entered her, and the intensity of his orgasm when he felt her give in and cum as he drilled into her bowels. Helena had had a few drinks by now, slightly laced with a drug to relax inhibitions even more, and the doctor nodded slightly to Mike. It was time. Mike started talking to her about some of the sexual research that they were doing, and the need for a responsive female subject, leading Helena to a place where she would agree to volunteer. She felt a bit embarrassed at first, but everyone round the table seemed nice and comfortable, and slowly she relaxed. She felt fuzzy and tingly inside as Mike's voice gently worked on her. At the same time his fingers were gently stroking up and down her thigh, bare under her skirt, hidden under the table, and she started to feel sexy. Very sexy in fact. So sexy that she agreed not just to help, but to go to the lab with them right now..... It was a large room in a complex of buildings. She could hear and smell animals somewhere near, as she lay back on the couch in the main room. It was like an examination couch at the Family Planning clinic, and she was feeling hot and nervous under the thin robe she had been told to wear, as Mike and another man lifted her feet into stirrups. She had been given a warm soapy enema by the doctor before coming through to the room, which had been a little strange and uncomfortable, but the doctor had explained that she needed to be thoroughly clean to prevent any germs in the lab, which had seemed to make a sort of sense. At least, she thought, at least I am clean. At the same time as the men closed soft bands on her feet to hold her in place, softer hands moved quickly and her wrists were secured into straps, holding her arms alongside but away from her body. Two women stood back smiling at her. "Hey wait a minute...what's going on? Mike?" She felt stirrings of fear as she realised that she was now lying, naked except for a medical robe, tied and helpless. The doctor entered, wheeling a trolley with a lot of strange things on up to beside the couch. She stared as he took a syringe and filled it with clear liquid, and came to her side. Helena was pulling hard on the straps now and squirming as she tried to get loose "Mike..For fuck's sake Mike this isn't funny....Let me go I've changed my mind" The doctor held her arm tight, swabbed a little area, and slid the needle under her skin, slowly injecting the fluid into her. Helena's struggles got weaker as a warm tingling spread through her body. In disbelief, she realised that her nipples were reacting and going hard, and there was a warm sensation deep inside her that told her she was beginning to lubricate inside. He smiled. "Just a little stimulant Helena my dear. I need you to be relaxed and ready for what is going to happen. Whatever we do, don't worry. You will not be damaged permanently, and nothing will ever show for long. But you will do as we say, and you will enjoy it. You can't prevent it, so please just relax. OK?" Helena stared back at him, wanting to fight but feeling sexy at the same time. The robe was rubbing on her nipples, and it was enough to make her breasts itch and glow inside, as if she was being touched softly and sexily. With a shock, she felt a tiny trickle between her legs run down her ass crack. She looked around the room. There were five men and two women, and they were starting to strip. The men were erect, and all were quite big down there, although none were as big as Mike, who she had measured once at 8 inches long. She looked back at the doctor. He was just stepping out of his things, and she gasped. His cock had to be a foot long, and it was beginning to swell. Her tummy lurched in fear as she saw the monster, but her insides clenched and throbbed at the same time in excitement. "Yes it's big isn't it? I specialise in growth serums, and tested it on myself. A fine success don't you think?" He smiled at her as he walked towards her, his cock still only half hard and swinging from side to side. "And now I think we can get rid of this" He gripped the top of her robe and tore it down the centre seam, pulling the halves of material away, and leaving her naked and exposed They looked. Her skin was smooth and silky, her breasts firm and tipped with dark pink as they wrinkled into hardness, with small pale pink circles surrounding them. They could see her ribs under the skin, and the faint muscles under her tight stomach. Her navel was a small circle with the bottom of it clear to see. The tendons in her thighs trembled slightly in her spread position, but their eyes were drawn to the long straight lips of her sex, now dark pink and slightly puffy, with the faintest gleam of dew between them. Her hair was trimmed into a light and fuzzy landing strip at the front, but she was totally bare between her legs. The men started to stroke themselves as they ached to enter her body. Just visible was the pink wrinkled edge of her anus, clenched tightly shut, but again with a dewy droplet gleaming on the skin where it had trickled from her sex. The doctor gave a sign, and one of the women kneeled between Helena's legs, and Helena's eyes closed as she felt a soft tongue gently press on her lips, sinking between them to the sensitive skin underneath, and licking along the length of her sex. Her hips lifted slightly as a shudder of pleasure went through her lower body. Almost at once, the other woman leant down and took an aching nipple into her mouth, flicking the tip and sucking it wonderfully. One of the men started to suckle the other a little harder, but still sexily enough for her breasts to fill with warm excitement. She didn't see the doctor carefully filling three syringes. Her hips pushed up at the woman's mouth as she felt her tiny clit being sucked and nibbled, and as a slender finger gently pushed her walls apart and slid up inside her body. Helena was moaning softly as waves of joy started in her tummy and tingled down her legs and up her body. Her fists clenched and her toes curled as the woman gently stretched her and drew her finger out, replacing it with something cool and metallic, which held her open. She felt air rush into her even as her clitty started to throb and pulse, and she whimpered as she started to cum. The woman and the men could see Helena's pussy held open by the speculum as her hips jerked and as she whimpered and moaned. The lips were puffier now and her inner skin gleamed with clear juice as she came and slowly relaxed a little. Mike knelt now, taking one of the syringes in his hand, and eased it into his naked girlfriend's sex, deep inside until the point touched the rubbery muscle of her cervix. He pressed the plunger as two others held her hips down, and her eyes flew open. "OWWWWWWWWHAT...." There was a short stinging pain inside which disappeared almost as quickly as it started.. The thing inside her quickly slid out, and then the speculum was withdrawn, leaving her with a strange, stinging heat deep in her belly. At once, the mouths were removed from her nipples, and hands again held her down as the doctor pinched the sides of her nipple and slowly pushed a needle down through the top into her breast Helena started to scream as she felt the metal spike enter her and go into her tittie flesh, where it stopped as the doctor pressed the plunger down. She was trying to jerk off the couch as he withdrew the empty syringe and moved to her other breast, where he repeated the action through the small dark nipple. As he stood back and the girl writhed and sobbed on the couch, they could see a pink flush spreading out from her nipples. "OW GOD STOP IT IT HURTS O GOD PLEASE MAKE IT STOP PLEASE O WHAT ARE YOU DOING?" The warm itching and tingling in her breasts rose to a peak and then settled, but did not go away. Soft fingers were stroking her between her legs and she didn't know whether to concentrate on the pleasure in her pussy or the pains in her breasts. Her breathing slowed down a little. "The injections in your breasts are designed to stimulate lactation....your milk glands. In a very short time, I expect them to start working as nature intended. It isn't dangerous, and so valuable for curing women who cannot breastfeed, Relax Helena. We will see very soon how well it works. As for the other, we need to relax your cervix a little, if you are going to take what we have in mind without being permanently damaged." She stared up at him, feeling the drugs working in her body "But before we get to that...I think we'd all like a little fuck..."
2. The men The headrest was slipped back a little, and before Helena could get her thoughts together, one of the men was there, holding his rigid cock down to her lips. He pulled the skin back and showed her the dark red head, already shiny with precum, which was welling up in the slit as she looked. She felt another man move between her spread legs, and the blunt head of a man's cock being pressed onto her wet sex. Her skin stretched wide to accept it as he leaned his weight forward and drove over 6 inches of hard flesh like a spike up her pussy. Her mouth opened to cry out, and the head man took the moment, and forced his cock between her lips as she started to scream. The cock in her pussy drove deep in one huge thrust, and scratchy hairs mashed straight onto her exposed and excited clitty, making her hips jump. Her mouth was stuffed with the meaty slippery and oozing cock, and she felt the precum puddle in the top of her throat. She swallowed so she could breathe, and felt it line her throat in the special way that a man's cock can. The cock in her pussy dragged back, making her lift to try to keep it in, and when it drove back into her she moaned and started to suck. The men quickly found a rhythm. She was being fucked both ends at once, and her body started to respond again. Her tongue found the slit in the man's cock and teased it, making him groan before he pushed hard into the warm wet mouth, driven almost over the edge by the sucking slurping mouth of the girl. Helena's ass crack was getting wet as the man fucked in and out faster and faster. Her belly was warm inside and her clitty screamed every time his hairs mashed it. The drug cocktails made her last inhibitions go and she began squeezing her pussy muscles tight on him as if it was Mike, milking his cock as he struggled to get even further into her body. He started to jerk out of rhythm, and a warm wet feeling spread in her belly. She could actually feel squirts of heat splash her cervix, which she had never felt before, and she sucked hard as her body exploded into a huge cum. The man between her legs felt as though she was trying to suck him up into her pussy as he poured a week's worth of seed into her humping body. As he got softer, he felt his cock being squeezed tight, and slowly forced out of her. Mike pushed him aside and positioned his fatter 8 inches in the entrance he had fucked so often. He leaned forward and squeezed her aching tits as he slid his cock up her belly, pushing the other man's cum further up into his girlfriend's body. Helena moaned deep in her throat as she felt the stretching effect of Mike's big prick reaming deep inside her, and as her aching heated boobs responded to his touch. Her moan vibrated along the cock in her mouth, and suddenly it swelled even thicker, and she felt her head being held as great squirts of cum filled her cheeks and throat. There was so much of it, and he wouldn't take his cock out, so she had to swallow and swallow and swallow, her tummy filling with the thick white cream. She could feel it burn all the way down, and then lay bubbling inside her stomach. Her mouth was full of the taste and the heat of it as the cock finally stopped spurting and she sucked out the little dribbles. A hand rolled her head to the other side, and she saw a hairy belly and another stiff pole waiting for her. Someone untied her hands and feet, and she reached out and took the cock in her hand, pulling it greedily to her shiny mouth and slurping it in. Mike lifted her legs high and drove hard, feeling the end of her pussy as he pushed his entire length into her. Helena usually squealed when he got this deep, because it hurt, although it was a good hurt, but this time she just felt a sexy thumping deep inside and she pushed back, tightening her pussy again and moving her hips round and round to pull his cock into her. The cock in her mouth started to fuck in and out, and she felt a mouth clamp onto one of her nipples and start to suck and love it. Beside her, one of the women was sucking the first men back to hardness, licking Helena's juice and man cum off one, and slowly wanking the other. The other woman was sucking Helena's nipple, which was starting to burn inside as something gave way. There was a strange releasing feeling and a glowing heat, and the woman felt a thin trickle of warm sweet milk enter her mouth. Helena was ready to explode and she wanked the man in her mouth fiercely, stroking and squeezing his balls as her lover fucked hard and steady and o God so deep into her. Once again, her tummy muscles clenched tight, showing as a ridge under the skin, as her pussy exploded into a huge orgasm. Mike grunted and pressed his cock right on the tiny hole inside her body, and his cum shot over and over again into her, making her cervix sting with joy as her clitty send shocks though her body in wave after wave. She barely noticed as the man in her mouth started to pour a stream of sperm into her mouth, gulping it down between gasps as her body bucked and jerked. Her legs clamped tight round Mike as the feelings on her sex, in her tittie, and the sensation of drinking so much cum all combined. Helena fainted as the cocks pulled out of her, Instantly, a thick white bubble started to appear in her now red sex, and the doctor quickly moved to insert a sort of plug into the wet mouth, keeping the men's sperm swimming in the warm tunnel of her sex. A thin trickle of clear liquid was seeping from one nipple, and the other looked swollen and tight. He placed small caps over them both, but first injected both nipples again with the serum. Once the caps were in place, he stood back. She was already a d cup, and her breasts were growing almost visibly, pale blue veins showing underneath the milky white skin. "Mike she is perfect...I don't even think she needs any more stimulants..she has got to be the most highly sexed woman I have ever seen. I think it's time to introduce her to the animals..Bring her through" and the doctor opened a door through to a larger, and definitely not medical-looking room.
The Medical experiment 3 3. The doctor and the dog Helena lay on her back on a padded bench, her legs secured wide apart and doubled back so that her knees were pointing back towards her shoulders. Her arms were strapped down, and as she started to come round fully she realised that her sex was totally exposed, and that she could barely move. A man was gently squeezing and rubbing her sore, stiff nipple, and she was aware of warm breath on her thighs, and a soft stroking of her sex lips, which made her moan softly even as she struggled to get away. "She's not making much" she heard from the man tweaking her nipple "I thought she would be able to feed an army from that stuff you injected" "Not to worry. Another little treatment will help. But her body needs to feel pregnant to really get a full result." The doctor's voice stopped as he moved, and Helena saw his face above her, and his hands holding another syringe. "Please O God please stop...let me go please I don't want to do this O please...." She was gabbling in panic, even as her body responded to the stroking between her legs. She could feel the sperm bubbling inside her as her tummy muscles clenched in fear and excitement. Between her legs, she felt a slim finger press slowly inside her slippery tunnel, and her eyes widened as she felt it press and stroke the special spot inside. "OHHHHHH.." she moaned, her hips moving slightly. The doctor smiled. "It seems that Anne has found your G spot my dear. Now you're going to like this...." He giggled madly as he moved the syringe away from her staring eyes. Suddenly, Helena gasped, as she felt the cool smooth syringe enter her body. The doctor spoke to his students "A mixture of collogen, injected into a woman's G spot, is known to raise the level of the sexual experience for her to new heights. As a treatment, it is already becoming common for non-orgasmic women. For someone like Helena here, it will have unexpected, but I think interesting results. I have added a small amount of amphetamine, which will stimulate and excite, and make the collogen work instantly, rather than the usual two to three weeks. NOW, Ann, please" and Helena felt a sharp stinging mixed with sharp pleasure deep inside her body. She groaned, her eyes closing as she felt warmth rush through her lower body, and then jerked as her breasts were pierced in turn by further injections of the lactating serum. She lay panting, with a thin gleam of sweat on her tummy and between her breasts, feeling cold air on her exposed sex. Her eyes opened again as she sensed a body moving between her legs, and she stretched her neck to see the doctor, holding his foot long cock like a club, positioning himself. It touched her, rubbing in the wet folds of skin before sticking in the entrance to her pussy. "NOOOO O GOD PLEEEEEEEEEASE OWWWWWOHHHHHHHH" she screamed as his cock forced her lips wide and started to sink into her soft body, pushing harder as he reached beyond even where Mike had stretched her. Her body jerked and her muscles went tight as he felt the doctor's cock hit the end of her pussy and stop, drawing back slightly. She could feel her inner skin being dragged out by the fat helmet on his cock and then he rammed hard and she felt a gut wrenching ripping inside as he forced it through her loosened cervix and into her very womb. No sound would come out of her throat as he started to fuck the monster into her and out again. The pain was indescribable as he punched the wall of her uterus with his dribbling prick, but his cock was filling her so tightly that the ridges on it were rubbing her G spot, and sharp jolts of pure ecstasy started to stab through her belly. In the background, she could hear strange animal sounds above the heavy breathing of the doctor, but all the sounds blended into one as her pussy clamped tight onto him and she started to cum. Her head felt it was going to explode as wave after wave of pure sex jolted her body over and over. When she felt his cock swell and start to squirt thick bullets of cum direct into her womb, the pleasure/pain of it just sent her higher and higher. The hands on her nipples squeezed hard, and the strange hot feeling grew in her breasts as she felt warm wet trickles run down her skin. Her breasts were starting to hurt but the cum kept on shaking her over and over, even as a wrenching pulling sensation in her pusst told her that the doctor was pulling out. "FUCK..O FUCK.....O FUCK MEEEEEEEE MOREMOREMOREMORE FUCK ME PLEASE O GOD PLEASE MOOOOOOORE" The naked 22 year old was jerking and shuddering, sex lubrication running in a clear slippery stream down to the bud of her asshole. There was a pressure between her legs, and something hot and slimy jabbed over and over at the thighs and clitoris before finding the mark and sinking into her pussy, which clamped onto it. She was aware of a heavy, hairy body above her and slobber dripping onto her neck, and looked up in horror to see a huge dog face panting above her. She tried to struggle but its cock was already half way in, and pushing past the G spot. The students had watched fascinated as the young girl took the doctor's immense cock into her belly, seeing it pull out shiny and wet and slightly streaked with pink as he raped into her body. Her nipples were dark dark pink and standing out almost an inch long as the drug in her breasts worked on her, and clear liquid trickled from them even as more trickled from her stretched pussy. When the doctor pulled out and his trained mastiff, with a weird shaped and dribbling 12 inch penis was lifted between the girl's legs, one of the men started to cum violently into the sucking mouth of the girl kneeling between his feet. The dog cock pushed harder and harder, and Helena was yelping like a bitch as the dog started to fuck her. Her mind was spinning as she felt the dog slide into her on a stream of it's master's cum. The dog was squirting little bolts of doggy precum over and over into his new bitch, and she could feel it burn her insides, way hotter than a human's precum, and squirting every time the dog thrust, which was so fast it was blowing her mind. Her cervix was wide open as the beast lodged into her and started to hump fiercely, scalding her with his juice as he worked to climax. Helena SCREEEEEAMED as her pussy started to stretch wider and wider, as the dog's knot started to expand in her pussy. It was as if her pussy was being ripped up the middle and her toes curled and cramped as she tried to stay conscious. With a howl, the dog rammed hard and Helena screamed and groaned and grunted as her uterus walls were coated in massive squirts of rummy, boiling, dog sperm. She felt 6, 7, 8 more huge squirts and then lost count as the drugs cut in and she bucked and jerked in a huge orgasm before passing out. When she woke up, the sore throbbing between her legs and inside her body was a constant pain. Her breasts felt tight and huge, and likely to split at any moment. She could feel a warm hard thing blocking her pussy, and a soft warm slushing feeling inside. Her tummy felt tight too, as if the skin was stretching. As the dog had furiously fucked Helena, Mike and his friends had been wanking themselves. The women had helped with their hands and mouths, and all the cum had been collected in a large glass cylinder, which contained almost 2 litres of cum from this night, from previous ones, and from the animals in the yard. This mixture was now hooked up and slowly being forced into the young woman's pussy, and her stomach was starting to swell from the pressure in her womb. Tight caps had been applied to her nipples, which now could not leak, and her breasts were swelling and going pink, with a maze of blue veins starting to show under the silky skin. The doctor had given clear instructions, and as the last of the sperm cocktail was forced up inside her, they unstrapped Helena and walked her to a different couch. Her legs would barely hold her, and she looked 5 months pregnant. Clear streaks down her thighs showed how much she had lubricated, and there were traces of white showing where some semen had oozed around the plug. She was mumbling nonsense as the strapped her down again. She was face down on a frame which was cut to allow her swollen breasts to hang free, and her swollen belly protruded through a carefully shaped and padded hole. Her legs were stretched wide apart, and her ass was up in the air. Even as she wondered why...she understood. There was a whinnying and the sound of hooves on the floor, and in a mirror she could see a gorgeous bay stallion being led in. It's cock was already swollen, and hung like a thick black hose, huge around and even huger in length. It's balls were massive and swinging as he was brought closer and she realised that it was going to cover her. She opened her mouth to scream..... and hands held her head as a hard cock was pushed between her lips. She started to gag as the warm meaty taste filled her mouth, and her pussy started to stretch. The watchers saw her labia going white as they struggled to take in the black leathery cock of the horse, and saw the tendons in her legs stand out as the immense thing replaced the plug so tightly that just a little white froth showed around the impaling horse cock. They could see the thick pole outlined under the tight skin of Helena's mound as the beast whinnied and drove it deep into the squelchy hot insides of the girl, getting more than half the length into her in one gut wrenching heave that made the girl scream soundlessly around the cock in her mouth.....
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