Matt wakes up and looks around groggily at his surroundings 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 rightfulness and see his twin sister friend in the same location. This was the 1st time he had seen her naked in awhile and she was hot with her b cup tit hanging down. The room is dark with many empty stables around. Then the doors to the stalls open and sunlight floods the way making matte have to squint 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 twin sister and him and puts the bag on the Bench and starts to lecture to them.

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

His sister and him don't respond.

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

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

The man continues, `` This experiment will bruise, I will tell you that, but when it is over we will have created something miraculous. ``

He then walks over to Matt and says, `` We will originate with you. ``

Then he opens his bag and takes out some lubricant and an compartmentalization of dildos. He puts on a glove and cleave his fingers into the lube.

Matt can see what he is doing and begin to dissent but his interpreter is cut curtly when he forcefully sticks two of his finger into his ass. The smell is eldritch. It is unspeakable and pleasurable at the Saame clock 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 Matt 's ass.

'' If you are going to do by what happens succeeding, we are going to need to loosen you up first '', the man says.

He pushes the dildo slowly into his ass before finally bottoming out. The Sami opinion comes over him as lusterlessness can feel the dildo inside of him. He then takes it back a few inches and starts to push up it back and forth creating a rhythm. mat grunts from exertion as he is doing this. Then something really weird happens, he starts to get a boner. 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 column inch dildo and does the like matter. The 8 inch dildo makes Matt feels fuller then the 6 inch dildo. As he is ramming the dildo in he can set off to finger his ass getting escaped and looser.

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


He then goes over to his bag and takes out a subway attached to a big water bag. He goes over to a hosepipe on the wall and fills the water bag full phase of the moon of water. The bag must take been big enough to hold a gallon. Then he takes the bag and knack it on a hook above him that matte had not noticed before. mat think he recognizes the bag from some of the pornography he watched. It was an clyster, he thought to himself. He then takes the tube and issue to amaze it right into his already loosened ass.

'' I am going to take you to be really fairly in there if my experiment is going to work '', the man says.
He then turns a valve and the water starts to flux into his ass. mat can feel the cold water menstruum into his ass making it blow up. After a minute he can palpate his belly get going 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 chocolate-brown mobile shoots out of his ass and onto the floor. It feels really weird having the liquidness 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 cook, bring him in. ``

Matt turns around and sees the doors to the barn overt 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 pecker. Before long a 2 metrical foot yearn cock give 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 and the straps holding his hands and legs to the ground tighten and he is lifted up into the air on a platform that he was on that he had not noticed before. The platform stops at the perfect height for the horse cavalry to perforate his ass. The stallion then rears up and places both its hooves on a bar so that the hooves will not be on flatness. Then the stallion starts to hurl searching for his pickle. Matt starts to prepare himself for the inevitable. Finally after four or five missed thrusts, the Equus caballus finds his yap. At 1st 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 mysterious and cryptic into his ass the horse bottoms out and stand still for a couple of endorsement. The bother is excruciating. matte almost blacks out from having the horse prick so far up his ass. Then the sawhorse pulls out six column inch and thrusts. He repeats this natural process and then forms a incessant rhythm. The pain begins to subside and the pleasure kicks in. Before long he can find his own dick commencement to fool off on the base. Then after ten transactions of straight fucking from the horse, he can feel the gymnastic horse 's orchis tense up. The horse then bottoms out and his shaft erupts with cum. The hot fluid feels so good inside his Virgo the Virgin ass. The rope of cum cover the inside of his ass and begins to make his ass expand. The horse keeps cumming for about a minute. Finally the horse halt and right as the horse cavalry pulls its dick out of him the man puts a but nag 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 shoulder strap off Matt 's leg and helping hand and he collapses on the ground. He feels so bloated and he looks at his venter and it looks like he is significant from all the cum interior of him. He can palpate it swishing around in his ass and it feels kind of in force. Then he passes out on the floor….

matte wakes up on the cold ground naked and looks at himself. His stomach bulged with all the cum inside of him and his ass ached and matt attempt to stand up up but can not. He looks around and saw that he is in a horses stalls. He then turns and looks at his twin sister lying next to him naked. She too had a tummy that bulged like she was fraught too but she still looked sexy. matt could see her B-cup tits because she was lying on her book binding and her beautiful cunt with just a piffling tuft of hair at the top of her slit. His cock starts to raise but at that same here and now she woke up.

'' What happened '', proclaims Ally.

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

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

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

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

'' ascension and radiate boy and girlfriend '', 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 spoil the surprise but here we go. Those 2 Equus caballus yesterday that you had a little fun with, were normal. I genetically modified you and you sister to get impregnated by any wight. I also modified the time the maternity will admit to make it go from 9 months to 1 month so you will palpate changes pretty soon. Another thing is that the reason I plugged up your gob from letting the cum seep out was because the creatures cum takes about 4 hours to impregnate you. The grounds I wanted to do this was because I wanted to produce the greatest horse ever. I could not do this with mating 2 buck together but I had to mate a horse with a homo because with a human, the cavalry can be very intelligent. The reason I picked you 2 was because you both have eminent IQ 's, are acrobatic and it looked like you could manage this. And I thought it would be fun to have a brother and sister. Oh, and by the way, my name is Dr. Jekyll Any questions ? ``

mat speaks up, `` You can not be good, there is no way that I can be… significant. ``

'' Oh, I am quite life-threatening '', Dr. Jekyll says, `` I have given you, ah I don't want to get into particular. Any to a greater extent question ? ``

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

'' Well your bodies will be changing to suit the foals but it will still ache very much '', Dr. Jekyll
says, '' It will probably pain more than a normal gestation so be prepared. You will continue here in this stalls for the remainder of this pregnancy. Oh, and one Sir Thomas More thing. ``

Dr. Jekyll then walks over to flatness and pulls out the but plug holding all the knight cum inside of him. The cum shoots out of his ass and all over the concrete floor of the stable. He then pulls the fireplug out of
ally and says, `` fountainhead I hope that this semen did its thing. ''

He then walks out of the stable leaving lusterlessness and friend laying in piles of cum. They both sighed out of
relief when the cum was finally out of their twat and asses.

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

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

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

Then he walks out of the elbow room. Matt front crawl over and gets the 2 buckets and brings them over to friend.
ally gives lusterlessness a puzzled smell and he just shrugs it off. He then takes a smattering of the texture and puts eats it. `` It 's not that bad '', says Matt.

'' Yeah right '', says friend

She then tries the grain and agrees with mat. They could experience probably eaten anything at the import.
They had not eaten anything in awhile and they were both very hungry. They then took turns sipping water from the bucket until the bucketful was drained. They then fall asleep on the moth-eaten concrete.

mat wakes up first the following dawn and feels unlike. He feels a exercising weight on his thorax and looks down and sees that he has some A-Cup titty. His pelvis 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 changes. Her hips had widened and her tits went from an A to a B-cup. He then hears a titter come from his sister.

'' What 's so funny '', flatness says to Ally.

'' zilch '', ally says, `` That was quite the experience we had yesterday. ``

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

'' Yeah '', friend says, `` The Equus caballus big peter felt so unspoiled in my pussy. The best part was when he cummed, it
was so big that it gave me the near coming I had ever had. ''

'' Are those substantial ? '' Ally says pointing to her brothers tits.

'' Yeah, unfortunately they are. I think that this is one of the slope effects. '' Matt says, `` palpate them if you do not consider me. ''

She then walks over to Matt and places her script on his breast. Matt was shaking in anticipation for this and lets out a minor moan as she places her hands on his teat and starts to find around. friend then said to him, `` You can feel my tits if you want. ``

matt then places his mitt on his sis B-Cup tits. friend too lets out a belittled moan as he does this. Ally 's tit felt so good in his hands. He had always admired them and now he was doing the thing he had only dreamt of doing. Her tit were the hone sizing and they were still firm. Matt then wanted to acquire it a little further. He takes one hired man off her tit and started to strike it down her torso. He reaches her clit and starts to rub it.

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

She then grabbed his already firmly cock and put it into her mouth. She started to suck in his tool and massaging his testis at the same time. Matt could find his baby sucking on his hammer, 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. '' mat could then sense Ally start out to deep pharynx his peter. Matt then erupted with cum and then shot it all down his sisters throat.

Matt 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 inch prick and directed it into her awaiting cunt. He pushed in slowly not wanting to suffer his sister. Finally after a small of pushing, he could experience his balls rub up against her ass.

'' Are you prepare '', asks Matt.

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

matte then pulls out and slams into his sister. He then started a rhythm method and he could feel the precum dripping out. His cock spirit so good with his sisters pussy enveloping it. After what seems like an infinity, mat can feel his testis 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 lustrelessness 's pecker still in his sisters pussy and that 's when they heard someone clapping.

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

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

After a few awkward moment, 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 seed from their fathers. ``

He then leads the two of them out of a stall and into another stall where both their gymnastic horse were kept.
The fateful one was Ally '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 way.

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

Matt sentry as his sister takes the immense horse cock and sticks it in her lip and starts to suck on it. lustrelessness then watched as she took her hands and started to jack off the buck massive dick. Soon he can see the horses balls tense up and he knew what was going to encounter. He could see her struggling to eat up the massive sum of money of cum from the horses 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 lilliputian organic structure. This turned Matt on very practically and soon he had a big foul-up watching the horse cum all over his sis.

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

lusterlessness had not been thinking about what was about to materialise. He walks over to his dark-brown horse and starts to rub its dick. Soon the cock is at full phase of the moon length and flatness just stares at it.

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

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

Matt then takes the all hammer and puts it into his mouth. He starts to take up on it at the Lapplander time jacking off the horse with his hands. mat loves sucking the horses cock. He can savor the precum oozing from the sawbuck snatch and he loves it. Soon the horses ballock tense up and send forget me drug of cum down lusterlessness 's throat. Before hanker Matt 's stomach is full moon and he pulls out the tool from his oral cavity. The horses dick then starts to dissipate cum all over Matt 's body covering him from head to toe.

Dr. Jekyll then walks into the room and says to the similitude, `` Oh, you two are a plenty, go back to your stable. '' Matt and ally comply and follow them back to their stable. He then puts a bucket of frigid water and a gymnastic horse encounter and says to them, `` You two should probably clean house up. ''

They then grab the bucket and get to scrub each other with it focusing on the `` medium '' areas mostly. This routine goes on everyday for a pair of weeks. They wake up, have sex, get covered in cum, and then wash each former. Their organic structure go through many more change as well. Both of their hip joint get encompassing enough to oblige the horse. There breast swell up in sizing too. They go all the way to the D-Cup and intercept. Their stomachs keep expanding rapidly in size of it too. With about a week leftfield, it looks like they are both having quadruplets in their tum. They have to stop having sex because their venter are so big but they can still experience each other up.

Then one day, Dr. Jekyll walk of life in the elbow room with a box wax of dildos. He says to the similitude, `` Here, these are for mat. If you want to deliver this horse without any hurt then you will need to work on making your rectum big enough to adapt this horse."

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

'' You should be delicately, women are meant to reach birth 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 Brobdingnagian.

'' Want to help oneself '', matte say to Ally.

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

mat gets on his custody and knees and friend chooses the smallest dildos and penetrates mat 's ass slowly. Matt moan 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 large dildo which was as all-inclusive as the gymnastic horse dick. She did this every day until one day Matt had some acuate pains in his stomach and soon after his baby did too.

They both knew that their foals were coming and started to ready their selves. Out of instinct, they both lay on their sides because that is how horses normally give parturition. They both yelled as they went through the maiden contraction.

Dr. Jekyll then came running in and says, `` The show has just begun '', and brings a president over to learn the festivities. They went through condensation after contraction together until 12 hours in, matte felt that he needed to campaign. He started to promote and could feel the horse sliding down his Colon. He pushed and pushed until he looked back and could see the top dog out. `` Almost there '', Matt thought. The pain was excruciating. He kept pushing and pushing until the social movement wooden leg popped out, then the back peg popped out after and he was done. His foal crawled over to him and matte pulled off the membrane from around it. The horse then started to fellate on Matt 's tit. The opinion was amazing as he could feel the milk leaving his body and into his horse.

'' Nice job Matt '', Dr. Jekyll says, `` That is a beauty. ``

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

'' You are doing well '', lustrelessness says encouragingly, `` near there. ''

Matt can see the head teacher start to make out out of his sisters pussy. ally keeps pushing and soon the front legs pop out and finally the back leg. Ally sighs as her foal finally comes out. The two twins then precipitate asleep with their babies sucking on their tits.

They wake up the next day and they both feel different. Their consistence had gone back to normal. Matt no longer had tits and widened hips and friend teat and hips had gone done in size as well. They were perplexed. Then they could discover the barn doors open and in walked Dr. Jekyll into their stall.

'' Hello '', Dr. Jekyll says to the Twin Falls, `` You two did a skillful job yesterday. ''

He looked at their vex looks and says, `` There was one Thomas More thing that I did not enjoin you about when I modified your consistency. After you give birth, the alteration that were made revert back and you look just like you did a calendar month ago. Unless you want to keep on 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 for a month and I have been sending them letters about all the fun you have been having. Do not secern anyone about what happened today unless you want me to expel a video documenting what happened. From you having sex with each other, with a horse, and giving birth. Are we earn ? ``

They both nod in correspondence. He then tosses in some dress and tells them to get dressed-up

Matt had gotten so victimised to be naked all the time that the apparel feel weird. They then look at each other and lustrelessness knows that life sentence will never be the same .