Matt wakes up and looks around groggily at his surround thinking to himself, what just happened. It appears that he was in a stable and was naked on his hands in knees with his dick hanging down from him. He looks to his right and see his twin sister Ally in the same attitude. This was the first time he had seen her raw in awhile and she was hot with her b cup tits hanging down. The way is dark with many empty stable around. Then the doors to the stable give and sunlight flood tide the room making mat have to squinch his eyes to see what is happening. The doors closes quickly and he can clearly see a man walking into the room with a big bag. He walks over to his similitude sister and him and puts the bag on the bench and starts to spill the beans 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 '', matt pleads.

The man continues, `` This experimentation will hurt, I will tell you that, but when it is over we will consume created something miraculous. ``

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 assortment of dildos. He puts on a boxing glove and sticks his fingers into the lube.

mat can see what he is doing and set about to protest but his vocalism is cut short when he forcefully sticks two of his finger into his ass. The feeling is unearthly. It is awful and pleasurable at the same 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 walking over and places the tip on mat 's ass.

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

He pushes the dildo slowly into his ass before finally bottoming out. The Lapp feeling comes over him as Matt can sense the dildo inside of him. He then takes it back a few column inch and starts to thrust it back and forth creating a rhythm. Matt grunts from travail as he is doing this. Then something really weird happens, he starts to get a foul-up. He had never been gay in his aliveness 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 affair. The 8 inch dildo makes matt feels fuller then the 6 inch dildo. As he is ramming the dildo in he can start to finger his ass getting looser and looser.

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


He then goes over to his bag and takes out a tube attached to a big body of water bag. He goes over to a hose on the wall and fills the water supply bag full moon of water. The bag must feature been big enough to hold a gal. Then he takes the bag and hangs it on a hook shot above him that matt had not noticed before. lustrelessness think he recognizes the bag from some of the pornography he watched. It was an enema, he thought to himself. He then takes the tube and proceeds to stick it right into his already loosened ass.

'' I am going to necessitate you to be really clean in there if my experimentation is going to work '', the man says.
He then turns a valve and the H2O starts to run into his ass. matt can feel the dusty water flow into his ass making it expand. After a mo he can finger his belly set about to expound and he looks back and his belly looks like he is pregnant. Finally the man closes the valve and slowly starts to take the clyster tube out of his ass. As soon as he does this, some embrown unstable shoots out of his ass and onto the trading floor. It feels really Weird having the liquid shoot out of matt 's ass. He then proceeds to put the enema tube back in

mat '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 quick, bring him in. ``

matt turns around and sees the doors to the barn receptive and a man walks in directing a stallion 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 cock. Before long a 2 foot farsighted cock leaping out from the horse.

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

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

The man then presses a button on his remote control and the strap holding his hands and legs to the solid ground tighten and he is lifted up into the air on a platform that he was on that he had not noticed before. The political program stops at the thoroughgoing height for the cavalry to sink in his ass. The stallion then rears up and places both its hooves on a bar so that the hooves will not be on mat. Then the stallion starts to thrust searching for his jam. Matt starts to prepare himself for the inevitable. Finally after four or five missed thrusting, the horse finds his hole. At first base the horse cavalry can only fit the apple sized tip of his dick into his ass. The horse then begins to thrust his pecker further and further into his ass. Finally, after a couple of minutes of the horse going thick and cryptical into his ass the horse bottoms out and stands still for a twain of seconds. The pain is excruciating. lustrelessness almost blacks out from having the cavalry gumshoe so far up his ass. Then the horse pulls out six inches and poking. He repeats this action and then forms a constant quantity rhythm method. The annoyance begins to subside and the pleasure kicks in. Before long he can feel his own dick start to shoot off on the floor. Then after ten minute of arc of flat fucking from the sawhorse, he can find the Equus caballus 's globe tense up. The horse then bottoms out and his shaft erupts with cum. The hot fluid look so good inside his Virgo ass. The circle of cum cover the inside of his ass and begins to make his ass expand. The sawhorse keeps cumming for about a minute. Finally the Equus caballus point and right as the horse pulls its dick out of him the man puts a but plug in.

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



He then lowers the platform and takes the straps off lustrelessness 's legs and hands and he collapses on the ground. He feels so bloated and he looks at his stomach and it looks like he is pregnant from all the cum inside of him. He can find it swishing around in his ass and it feels kind of good. Then he passes out on the floor….

Matt wakes up on the cold ground naked and looks at himself. His tummy bulged with all the cum inside of him and his ass ached and lusterlessness tries to stomach up but can not. He looks around and saw that he is in a horse stable. He then turns and looks at his twin sister lying next to him raw. She too had a breadbasket that bulged like she was fraught too but she still looked aphrodisiacal. matte could see her B-cup tits because she was lying on her back and her beautiful pussycat with just a little tussock of hair at the top of her slit. His hammer starts to grow but at that same moment she woke up.

'' What happened '', proclaims Ally.

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

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

'' Fuck my pussy, says ally, `` Yeah ''

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

'' Rise and shine boys and girls '', the man says, `` I bet you have been wondering what the experiment I
preformed on you was for. I didn't want to say you yesterday to spoil the surprise but here we go. Those 2 gymnastic horse yesterday that you had a petty fun with, were normal. I genetically modified you and you sister to get impregnated by any fauna. I also modified the time the pregnancy will take to produce it go from 9 months to 1 calendar month so you will feel alteration pretty soon. Another thing is that the ground I plugged up your fix from letting the cum seep out was because the tool cum takes about 4 hr to impregnate you. The reason I wanted to do this was because I wanted to create the greatest sawhorse ever. I could not do this with mating 2 horses together but I had to copulate a horse with a human because with a human, the horse can be very well-informed. The rationality I picked you 2 was because you both have eminent IQ 's, are athletic and it looked like you could handle this. And I thought it would be fun to hold a crony and sister. Oh, and by the way, my name is Dr. Jekyll Any questions ? ``

lustrelessness speaks up, `` You can not be unplayful, there is no way that I can be… pregnant. ``

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

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

'' Well your eubstance will be changing to conciliate the foals but it will still bruise very much '', Dr. Jekyll
says, '' It will probably spite more than a rule maternity so be prepared. You will stay here in this stable for the remainder of this pregnancy. Oh, and one More affair. ``

Dr. Jekyll then walks over to mat and pulls out the but sparking plug holding all the horses cum inside of him. The cum shoots out of his ass and all over the concrete floor of the stable. He then pulls the cud out of
friend and says, `` wellspring I hope that this semen did its affair. ''

He then walks out of the horse barn leaving Matt and Ally laying in piles of cum. They both sighed out of
ease when the cum was finally out of their puss and asses.

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

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

lusterlessness then lays on the primer coat in his pool of cum, thinking about the issue that happened yesterday. Then the man walks into the stable and says, `` Here 's dinner party. ``

Then he walks out of the room. matte crawls over and gets the 2 bucketful and brings them over to Ally.
friend gives lusterlessness a puzzle look and he just shrugs it off. He then takes a handful of the grain and puts eats it. `` It 's not that bad '', says Matt.

'' Yeah mighty '', says friend

She then tries the texture and agrees with matte. They could cause probably eaten anything at the moment.
They had not eaten anything in awhile and they were both very hungry. They then took bout sipping water from the pail until the bucket was drained. They then fall asleep on the frigidity concrete.

Matt wakes up first the following morning and flavor different. He feels a weight on his chest and looks down and sees that he has some A-Cup teat. His hips had widened too and his venter was a small bloated. His ass also did not experience sore anymore. He looks over and sees his sister awake as well. He could see that she also had changes. Her hips had widened and her titmouse went from an A to a B-cup. He then hears a giggle ejaculate from his babe.

'' What 's so mirthful '', lustrelessness says to Ally.

'' naught '', friend says, `` That was quite the experience we had yesterday. ``

'' Yeah '', flatness says, `` It hurt at get-go but after awhile it felt really good. ``

'' Yeah '', Ally says, `` The knight big dick felt so good in my slit. The best part was when he cummed, it
was so great that it gave me the comfortably orgasm I had ever had. ''

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

'' Yeah, unfortunately they are. I think that this is one of the side of meat effects. '' Matt says, `` Feel them if you do not believe me. ''

She then walks over to Matt and places her hands on his tits. matte was shaking in anticipation for this and lets out a small moan as she places her hands on his bosom and starts to feel around. ally then said to him, `` You can feel my tits if you want. ``

lusterlessness then places his helping hand on his sisters B-Cup pap. friend too lets out a minuscule moan as he does this. ally 's breast felt so sound in his hands. He had always admired them and now he was doing the thing he had only dreamt of doing. Her tits were the pure sizing and they were still firm. mat then wanted to assume it a piffling further. He takes one deal off her tit and started to move it down her body. He reaches her clit and starts to rub it.

Her body shook violently as the coming went through her wholly body. After the orgasm was over, she said to her brother, `` Now your turn. ``

She then grabbed his already intemperately hammer and put it into her mouth. She started to draw his cock and massaging his balls at the same time. Matt could sense his sis sucking on his prick, 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. '' Matt could then experience Ally protrude to deep pharynx his cock. matte then erupted with cum and then shot it all down his Sister throat.

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

'' Are you ready '', asks Matt.

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

Matt then pulls out and flap down into his sister. He then started a rhythm and he could experience the precum dripping out. His cock tactile property so dear with his sisters pussy enveloping it. After what seems like an eternity, Matt can feel his clod tense up and he goes hilt deep and cums into his sister as hard as he can.

They both lay there for a few moments with flatness 's hawkshaw still in his sis pussy and that 's when they heard someone clapping.

Dr. Jekyll had been watching the hale thing and was astonished. He had never thought that this would occur. He then said, `` assassin you two. That was quite the show. ''

Matt and Ally both blushed as they both thought about what just happened. What made it even worse was that somebody had seen them do it. lustrelessness then pulled his semi firmly dick out of his sisters pussy and a little stream of cum followed after that.

After a few awkward second base, the Dr. Jekyll says, `` Well the reasonableness I came here was because I needed to bung your Thomas Kyd '', pointing towards there bulging breadbasket, `` 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 cubicle where both their cavalry were kept.
The black one was ally 's and the John Brown one was lustrelessness 's. `` Well, I will go away 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 ally says, `` wellspring I will go first to establish you how it is done. ''

Matt watches as his babe takes the huge horse cock and joint it in her rima oris and starts to draw on it. matte then watched as she took her hands and started to jack off the horses monumental dick. Soon he can see the horse balls tense up and he knew what was going to happen. He could see her struggling to swallow up the massive amounts of cum from the horses but soon he could see that she couldn't take it any more so she pulled the horse cavalry cock out of his mouthpiece as it was still cumming and it cummed all over her lilliputian body. This turned matt on very often and soon he had a big bungle watching the horse cum all over his sister.

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

Matt had not been thinking about what was about to bump. He walks over to his brown horse and starts to rub its putz. Soon the cock is at broad distance 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 completely putz and puts it into his oral fissure. He starts to suck up on it at the Saame prison term jacking off the horse with his hired hand. Matt loves sucking the horses stopcock. He can taste the precum oozing from the horses slit and he loves it. Soon the horses balls tense up and send out Mexican valium of cum down flatness 's throat. Before long lustrelessness 's stomach is full and he pulls out the cock from his mouth. The sawhorse dick then starts to shoot cum all over mat 's body covering him from head to toe.

Dr. Jekyll then walks into the room and says to the twin, `` Oh, you two are a mess, go back to your stable. '' Matt and Ally comply and follow them back to their unchanging. He then puts a pail of moth-eaten water supply and a horse brush and says to them, `` You two should probably scavenge up. ''

They then grab the bucketful and start to cancel each former with it focusing on the `` sensitive '' areas mostly. This workaday goes on everyday for a couple of hebdomad. They wake up, have sex, get covered in cum, and then lave each early. Their trunk go through many more variety as well. Both of their hips get astray enough to accommodate the cavalry. There titty swell up in size too. They go all the way to the D-Cup and stop. Their digest continue expanding rapidly in size too. With about a workweek left wing, it looks like they are both having foursome in their stomachs. They have to stop having sex because their bellies are so big but they can still experience each other up.

Then one day, Dr. Jekyll walks in the room with a box wax of dildos. He says to the twins, `` Here, these are for Matt. If you want to deliver this horse without any impairment then you will require to work on on making your rectum big enough to accommodate this horse."

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

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

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

'' Want to aid '', flatness say to Ally.

'' Sure '', ally says, `` Now get into the position. ''

Matt gets on his hands and knee joint and friend chooses the smallest dildos and penetrates matt 's ass slowly. Matt moans because he had been craving having the sawhorse dick in his ass for awhile but he knew that it would smart the foal. She then worked her way up to the biggest dildo which was as across-the-board as the horses dick. She did this every day until one day lusterlessness had some crisp pains in his stomach and soon after his sister did too.

They both knew that their foals were coming and started to gear up their self. Out of instinct, they both lay on their side of meat because that is how horse normally give giving birth. They both yelled as they went through the low contraction.

Dr. Jekyll then came running in and says, `` The show has just begun '', and brings a professorship over to watch the festivity. They went through muscle contraction after compression together until 12 time of day in, Matt 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 head out. `` Almost there '', Matt thought. The pain was excruciating. He kept pushing and pushing until the front legs popped out, then the back peg popped out after and he was done. His foal crawled over to him and lustrelessness pulled off the membrane from around it. The sawbuck then started to give suck on mat 's tit. The feeling was amazing as he could feel the milk leaving his trunk and into his horse.

'' Nice job matte '', Dr. Jekyll says, `` That is a looker. ``

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

'' You are doing well '', Matt says encouragingly, `` nearly there. ''

mat can see the head starting to come out of his sister pussy. friend keeps pushing and soon the strawman legs pop out and finally the cover leg. ally sighs as her foal finally comes out. The two twins then come asleep with their child sucking on their tits.

They wake up the adjacent day and they both feel dissimilar. Their dead body had gone back to rule. Matt no longer had tit and widened pelvis and ally teat and pelvic girdle had gone done in sizing as well. They were perplexed. Then they could hear the barn threshold open and in take the air Dr. Jekyll into their stall.

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

He looked at their perplexed looks and says, `` There was one Sir Thomas More thing that I did not recite 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 stay fresh the change. ``

'' 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 beam you to camp for a calendar month and I have been sending them varsity letter about all the fun you have been having. Do not tell anyone about what happened today unless you want me to bring out a video documenting what happened. From you having sex with each other, with a horse, and giving parentage. Are we clear ? ``

They both nod in agreement. He then tosses in some clothes and tells them to get dressed

Matt had gotten so used to be naked all the clip that the clothes feel weird. They then look at each other and matt knows that life will never be the Saame .