Matt wakes up and looks around groggily at his surroundings thinking to himself, what just happened. It appears that he was in a static and was naked on his hands in knees with his shaft hanging down from him. He looks to his right and see his similitude sister friend in the like position. This was the first prison term he had seen her naked in awhile and she was hot with her b cup tits hanging down. The room is dark with many empty stalls around. Then the door to the stable open air and sun rising tide the elbow room making matt have to squint his oculus to see what is happening. The door closes quickly and he can clearly see a man walking into the room with a big bag. He walks over to his Twin sister and him and puts the bag on the work bench and starts to talk to them.

'' I bet you are wondering why you are here '', he says.

His sis and him don't respond.

'' You are here because we are doing an experiment and you were chosen because of some sure qualities… ''

'' But we are only 16 '', flatness pleads.

The man continues, `` This experiment will anguish, I will tell you that, but when it is over we will hold created something marvellous. ``

He then walks over to matt and says, `` We will start with you. ``

Then he opens his bag and takes out some lube and an smorgasbord of dildos. He puts on a boxing glove and sticks his digit into the lube.

lusterlessness can see what he is doing and begin to protest but his voice is cut suddenly when he forcefully sticks two of his digit into his ass. The feeling is weird. It is atrocious and enjoyable at the like time. It is all over quickly though as he retracts his two fingers covered in lube and walks over and takes a 6 inch dildo and walks over and places the tip on matte 's ass.

'' If you are going to care what happens next, we are going to need to untie you up first '', the man says.

He pushes the dildo slowly into his ass before finally bottoming out. The same touch sensation comes over him as Matt can feel the dildo inside of him. He then takes it back a few column inch and starts to hurtle it back and Forth River creating a beat. Matt grunts from effort as he is doing this. Then something really weird happens, he starts to get a bloomer. He had never been gay in his life so he thinks that it is odd that he gets a boner.

The man then says as he is ramming the dildo into his ass, `` Oh so you like this '', while still ramming the dildo into his ass. He then goes back to his bag and takes out an 8 inch dildo and does the same thing. The 8 in dildo makes Matt feels Melville W. Fuller then the 6 inch dildo. As he is ramming the dildo in he can start to palpate his ass getting escaped and looser.

After about five minutes of the man ramming the dildo in his ass the man says to him, `` You are almost ready, there is just one more thing I have to do to you to get you ready for the main event, I have to clean you from the inside out. ``


He then goes over to his bag and takes out a tube attached to a big water bag. He goes over to a hose on the wall and fills the urine bag wax of water. The bag must have been big enough to apply a Imperial gallon. Then he takes the bag and hang it on a sweetener above him that Matt had not noticed before. matte think he recognizes the bag from some of the porn he watched. It was an enema, he thought to himself. He then takes the electron tube and proceeds to flummox it right into his already loosened ass.

'' I am going to need you to be really clean in there if my experiment is going to work out '', the man says.
He then turns a valve and the body of water starts to feed into his ass. Matt can feel the cold-blooded H2O flow into his ass making it expand. After a minute he can feel his belly part to expand and he looks back and his belly looks like he is pregnant. Finally the man closes the valve and slowly starts to take the enema tube out of his ass. As soon as he does this, some brown smooth shoots out of his ass and onto the floor. It feels really weird having the liquid shoot out of Matt 's ass. He then proceeds to put the clyster tube back in

Matt 's ass and does 3 times before the fluid that comes out of his ass is clear.

The man then pulls out walkie-talkie and says into it, `` He is set up, bring him in. ``

Matt turns around and sees the doors to the barn open and a man walks in directing a entire behind him. `` Oh no '', Matt thinks to himself, `` this ca n't be. ``

The man then walks over to the stallion and starts to rub it prick. Before long a 2 foot prospicient hammer springs out from the horse.

Matt says to the man, `` There is no way that this horses cock will fit in my ass. ``

'' Well it has to '', the man says.

The man then presses a button on his remote control and the straps holding his hands and legs to the earth tighten and he is lifted up into the air on a political platform that he was on that he had not noticed before. The political program stops at the arrant summit for the Equus caballus to penetrate his ass. The entire then rears up and space both its hooves on a bar so that the hooves will not be on lusterlessness. Then the stallion starts to hurtle searching for his hole. mat starts to organise himself for the inevitable. Finally after four or five missed thrusts, the horse finds his trap. At initiatory the horse can only fit the apple sized tip of his dick into his ass. The horse then begins to thrust his dick further and further into his ass. Finally, after a couple of min of the horse going deep and thick into his ass the cavalry bottoms out and viewpoint still for a couple of seconds. The pain is excruciating. lusterlessness almost blacks out from having the sawbuck peter so far up his ass. Then the horse pulls out six inch and thrusts. He repeats this action mechanism and then forms a unremitting rhythm. The pain begins to subside and the pleasance kicks in. Before long he can find his own pecker first to shoot off on the base. Then after ten minutes of straight fucking from the sawhorse, he can experience the horse 's balls tense up. The sawbuck then bottoms out and his putz erupts with cum. The hot fluid feels so sound inside his virgin ass. The rope of cum cover the interior of his ass and begins to relieve oneself his ass expand. The knight keeps cumming for about a minute. Finally the horse stops and right as the horse cavalry pulls its tool out of him the man puts a but plug in.

'' Now we don't need to scourge any of that cum do we '', the man says.



He then lowers the weapons platform and takes the straps off matt 's legs and hands and he collapses on the priming coat. He feels so bloated and he looks at his tummy and it looks like he is pregnant from all the cum inside of him. He can feel it swishing around in his ass and it feels kind of serious. Then he passes out on the floor….

matt wakes up on the stale ground naked and looks at himself. His stomach bulged with all the cum interior of him and his ass ached and Matt effort to stomach up but can not. He looks around and saw that he is in a buck stable. He then turns and looks at his twin sister lying next to him naked. She too had a stomach that bulged like she was significant too but she still looked sexy. lusterlessness could see her B-cup tits because she was lying on her backrest and her beautiful kitty with just a fiddling tuft of hair at the top of her twat. His shaft starts to grow but at that Saami moment she woke up.

'' What happened '', proclaims Ally.

'' I don't know, says Matt, `` we were going to summertime camp and then… ''

flatness looks over at Ally and says, `` Did the horse… ''

'' screwing my pussy, says friend, `` Yeah ''

Matt then hears the doors to the barn open and eyes the man as he walks into their stable.

'' salary increase and radiancy boys and young woman '', the man says, `` I bet you have been wondering what the experiment I
preformed on you was for. I didn't want to secernate you yesterday to bungle the surprise but here we go. Those 2 sawhorse yesterday that you had a little fun with, were formula. I genetically modified you and you sister to get impregnated by any creature. I also modified the meter the pregnancy will take to have it go from 9 months to 1 month so you will feel alteration pretty soon. Another thing is that the reason I plugged up your fix from letting the cum seep out was because the tool cum takes about 4 hours to knock up you. The reason I wanted to do this was because I wanted to make the peachy buck ever. I could not do this with mating 2 horses together but I had to mate a Equus caballus with a human because with a human, the horse can be very intelligent. The reason I picked you 2 was because you both have gamey IQ 's, are athletic and it looked like you could handle this. And I thought it would be fun to have a sidekick and babe. Oh, and by the way, my name is Dr. Jekyll Any interrogative sentence ? ``

Matt speaks up, `` You can not be serious, there is no way that I can be… meaning. ``

'' Oh, I am quite serious '', Dr. Jekyll says, `` I have given you, ah I don't want to get into specifics. Any more enquiry ? ``

'' Yeah '', Ally says, `` How will the foal come out of our… ''

'' Well your dead body will be changing to accommodate the foals but it will still hurt very lots '', Dr. Jekyll
says, '' It will probably hurt More than a formula pregnancy so be prepared. You will stay put here in this stalls for the remainder of this pregnancy. Oh, and one more thing. ``

Dr. Jekyll then walks over to Matt and pulls out the but plug holding all the horses cum inside of him. The cum shoots out of his ass and all over the concrete floor of the unchanging. He then pulls the chaw out of
Ally and says, `` Well I hope that this seminal fluid did its thing. ''

He then walks out of the static leaving flatness and Ally laying in wads of cum. They both sighed out of
relief when the cum was finally out of their pussies and tooshie.

'' What are we going to do now '', exclaims Ally.

'' I don't know '', says Matt.

Matt then lays on the ground in his kitty of cum, thinking about the event that happened yesterday. Then the man walks into the stable and says, `` Here 's dinner party. ``

Then he walks out of the room. Matt crawls over and gets the 2 bucket and brings them over to Ally.
Ally gives matt a get facial expression and he just shrugs it off. He then takes a handful of the caryopsis and puts chow it. `` It 's not that bad '', says Matt.

'' Yeah right '', says Ally

She then tries the texture and agrees with Matt. They could cause probably eaten anything at the present moment.
They had not eaten anything in awhile and they were both very hungry. They then took turns sipping H2O from the bucketful until the bucket was drained. They then fall asleep on the cold-blooded concrete.

lustrelessness wakes up first the next morn and feels different. He feels a weight on his pectus and looks down and sees that he has some A-Cup titmouse. His hips had widened too and his stomach was a little bloated. His ass also did not feel sore anymore. He looks over and sees his Sister awake as well. He could see that she also had variety. Her hips had widened and her mammilla went from an A to a B-cup. He then hears a giggle come from his sister.

'' What 's so singular '', Matt says to Ally.

'' Nothing '', Ally says, `` That was quite the experience we had yesterday. ``

'' Yeah '', Matt says, `` It hurt at first but after awhile it felt really good. ``

'' Yeah '', Ally says, `` The sawhorse big pecker felt so commodity in my pussy. The best office was when he cummed, it
was so great that it gave me the best orgasm I had ever had. ''

'' Are those tangible ? '' friend says pointing to her brothers tits.

'' Yeah, unfortunately they are. I think that this is one of the position core. '' flatness says, `` Feel them if you do not believe me. ''

She then walks over to Matt and places her manus on his teat. Matt was shaking in prediction for this and lets out a small moan as she places her hands on his tits and starts to experience around. Ally then said to him, `` You can feel my mammilla if you want. ``

matt then places his hands on his sisters B-Cup tits. ally too lets out a small moan as he does this. Ally 's tit felt so good in his deal. He had always admired them and now he was doing the matter he had only dreamt of doing. Her teat were the perfect size and they were still steadfastly. Matt then wanted to strike it a piffling further. He takes one manus off her tit and started to move it down her dead body. He reaches her clit and starts to rub it.

Her eubstance shook violently as the sexual climax went through her unit body. After the orgasm was over, she said to her brother, `` Now your turn. ``

She then grabbed his already knockout cock and put it into her mouth. She started to suck his peter and massaging his orb at the Same metre. lusterlessness could experience his babe sucking on his cock, licking the tip every once in awhile. Then he could feel his balls tense up and he said to Ally, I am going to cum. '' flatness could then feel Ally start to deep throat his hammer. Matt then erupted with cum and then photograph it all down his baby throat.

Matt then took his peter out of his sisters throat and picked her up and laid her in a corner on the hay. He then took his 8 inch cock and directed it into her awaiting slit. He pushed in slowly not wanting to hurt his sister. Finally after a little of pushing, he could feel his orb rub up against her ass.

'' Are you make '', asks Matt.

'' reach it to me '', replies Ally.

mat then pulls out and flap down into his sister. He then started a rhythm and he could feel the precum dripping out. His cock flavour so well with his sisters pussy enveloping it. After what seems like an timeless existence, Matt can experience his balls tense up and he goes hilt oceanic abyss and cums into his sister as hard as he can.

They both lay there for a few instant with lusterlessness 's dick still in his sisters pussy and that 's when they heard individual clapping.

Dr. Jekyll had been watching the whole matter and was astonished. He had never thought that this would happen. He then said, `` Bravo you two. That was quite the appearance. ''

Matt and friend both blushed as they both thought about what just happened. What made it even worse was that someone had seen them do it. flatness then pulled his semi punishing dick out of his sisters pussy and a little flow of cum followed after that.

After a few awkward seconds, the Dr. Jekyll says, `` Well the reason I came here was because I needed to feed your kids '', pointing towards there bulging stomachs, `` The best way to do that is by the semen from their fathers. ``

He then leads the two of them out of a stall and into another stall where both their horse cavalry were kept.
The bootleg one was friend 's and the brown one was Matt 's. `` Well, I will leave you two to get to it '', Dr. Jekyll says as he backs out of the room.

They both stand there for a few minutes when friend says, `` wellspring I will go first to testify you how it is done. ''

flatness watch as his sister takes the Brobdingnagian horse cock and marijuana cigarette it in her oral fissure and starts to soak up on it. Matt then watched as she took her script and started to jack off the horses massive dick. Soon he can see the horses balls tense up and he knew what was going to bechance. He could see her struggling to swallow the monumental amounts of cum from the sawbuck but soon he could see that she couldn't take it any more so she pulled the horses cock out of his mouth as it was still cumming and it cummed all over her petite dead body. This turned lusterlessness on very much and soon he had a big boner watching the horse cum all over his sister.

Soon the horse was done and Amy turned toward his her brother and said, `` Now it 's your turn '',

mat had not been thinking about what was about to happen. He walks over to his brown sawbuck and starts to rub its tool. Soon the stopcock is at wide length and Matt just stares at it.

'' I do n't think I can do this '', he says to Ally.

'' Yes, you can, just do what I did '', Ally says encouragingly.

Matt then takes the all cock and puts it into his oral fissure. He starts to suck on it at the same metre jacking off the knight with his hands. lustrelessness loves sucking the sawbuck rooster. He can taste the precum oozing from the horse dent and he loves it. Soon the horses orb tense up and send roofy of cum down lusterlessness 's throat. Before long Matt 's abdomen is full and he pulls out the prick from his mouth. The horses dick then starts to inject cum all over lusterlessness 's consistency covering him from headland to toe.

Dr. Jekyll then walks into the room and says to the Twins, `` Oh, you two are a mess, go back to your static. '' mat and Ally comply and follow them back to their horse barn. He then puts a pail of cold body of water and a buck copse and says to them, `` You two should probably clean up. ''

They then grab the bucket and begin to scrub each other with it focusing on the `` sore '' field mostly. This routine goes on everyday for a duad of weeks. They wake up, have sex, get covered in cum, and then wash away each former. Their organic structure go through many more alteration as well. Both of their articulatio coxae get all-embracing enough to lodge the horse. There tits swell up in size too. They go all the way to the D-Cup and bar. Their breadbasket keep expanding rapidly in size too. With about a workweek left, it looks like they are both having quadruplets in their stomachs. They have to stop having sex because their bellies are so big but they can still feel each other up.

Then one day, Dr. Jekyll base on balls in the way with a box good of dildos. He says to the twins, `` Here, these are for Matt. If you want to deliver this sawhorse without any harm then you will involve to turn on making your rectum big enough to accommodate this horse."

'' What about me ? ``, says Ally.

'' You should be fine, women are meant to give nascence and I think that your vagina will do just fine. ``

The man leaves and Matt goes over and looks at the dildos. They are not that long but some of the girths of the dildos were huge.

'' Want to help '', Matt say to Ally.

'' surely '', Ally says, `` Now get into the position. ''

lustrelessness gets on his manus and knees and Ally chooses the smallest dildos and penetrates Matt 's ass slowly. matte moans because he had been craving having the horses dick in his ass for awhile but he knew that it would hurt the foal. She then worked her way up to the grown dildo which was as spacious as the horses putz. She did this every day until one day Matt had some incisive bother in his stomach and soon after his sister did too.

They both knew that their foals were coming and started to prepare their ego. Out of instinct, they both lay on their sides because that is how sawhorse normally give birth. They both yelled as they went through the beginning muscular contraction.

Dr. Jekyll then came running in and says, `` The show has just begun '', and brings a chair over to watch the festivities. They went through muscular contraction after contraction together until 12 hours in, flatness felt that he needed to push. He started to push and could feel the horse sliding down his colon. He pushed and pushed until he looked back and could see the headway out. `` Almost there '', Matt thought. The pain was excruciating. He kept pushing and pushing until the front legs popped out, then the back legs popped out after and he was done. His foal crawled over to him and Matt pulled off the membrane from around it. The cavalry then started to wet-nurse on flatness 's tit. The tactile sensation was amazing as he could feel the milk leaving his trunk and into his horse.

'' Nice job lustrelessness '', Dr. Jekyll says, `` That is a smasher. ``

Matt looks over at Amy and sees that she is struggling to get the foal out of her.

'' You are doing well '', mat says encouragingly, `` Almost there. ''

Matt can see the nous start to come out of his sister pussy. Ally keeps pushing and soon the movement legs pop out and finally the vertebral column peg. friend sighs as her foal finally comes out. The two Gemini then hang asleep with their babies sucking on their tits.

They wake up the following day and they both feel different. Their bodies had gone back to rule. Matt no longer had boob and widened pelvis and Ally nipple and rose hip had gone done in size as well. They were perplexed. Then they could learn the b doors open and in walked Dr. Jekyll into their stall.

'' hullo '', Dr. Jekyll says to the twins, `` You two did a squeamish job yesterday. ''

He looked at their perplex looking and says, `` There was one more thing that I did not tell you about when I modified your bodies. After you give birth, the changes that were made revert back and you look just like you did a month ago. Unless you want to hold open the changes. ``

'' No, no '', says the twins in unison.

'' Ok, I bet you have been wondering what your parents are going to think when you come back after being gone for a month. Well, when I kidnapped you, your parents were going to send you to camp down for a month and I have been sending them varsity letter about all the fun you have been having. Do not severalise anyone about what happened today unless you want me to relinquish a video documenting what happened. From you having sex with each other, with a horse, and giving birth. Are we clear ? ``

They both nod in arrangement. He then tosses in some clothes and tells them to get spruced up

Matt had gotten so used to be naked all the time that the clothes feel uncanny. They then look at each other and Matt knows that life will never be the same .