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 hand in knees with his dick hanging down from him. He looks to his right and see his Twin sister Ally in the Lapp position. This was the first meter he had seen her naked in awhile and she was hot with her b cup titmouse hanging down. The elbow room is dark with many empty horse barn around. Then the doors to the stalls give and sunlight floods the room making Matt have to squinch his eye 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 judiciary and starts to tattle 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 experimentation and you were chosen because of some sure qualities… ''

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

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

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

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

matte can see what he is doing and get to protest but his vocalism is cut short when he forcefully sticks two of his finger into his ass. The feeling is eldritch. It is painful and pleasurable at the Lapp time. It is all over quickly though as he retracts his two fingers covered in lubricator and walk over and takes a 6 inch dildo and walks over and places the tip on lustrelessness 's ass.

'' If you are going to treat what happens next, 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 same tactile sensation comes over him as Matt can palpate the dildo inside of him. He then takes it back a few inch and starts to squeeze it back and Forth creating a rhythm. Matt grunts from effort as he is doing this. Then something really weird happens, he starts to get a boner. He had never been gay in his life story 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 Lapp thing. The 8 inch dildo makes Matt feels fuller then the 6 column inch dildo. As he is ramming the dildo in he can start to feel 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 ready, there is just one Sir Thomas More thing I have to do to you to get you fix for the briny 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 paries and fills the weewee bag full of H2O. The bag must get been big enough to hold a gallon. Then he takes the bag and hangs it on a lure above him that Matt had not noticed before. matt think he recognizes the bag from some of the porn he watched. It was an clyster, he thought to himself. He then takes the metro and proceeds to stick it right into his already loosened ass.

'' I am going to need you to be really unobjectionable in there if my experiment is going to play '', the man says.
He then turns a valve and the water starts to hang into his ass. lustrelessness can sense the stale water flow into his ass making it expand. After a second he can feel his belly commence to dilate 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 John Brown fluid shoots out of his ass and onto the floor. It feels really weird having the liquidness shoot out of mat 's ass. He then proceeds to put the enema tube back in

Matt 's ass and does 3 time 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, bring him in. ``

matt turns around and sees the doors to the barn undefended and a man walks in directing a entire behind him. `` Oh no '', matte 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 foot long hammer saltation out from the horse.

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

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

The man then presses a push on his remote control and the straps holding his script and legs to the priming tighten and he is lifted up into the air on a weapons platform that he was on that he had not noticed before. The platform stops at the gross peak for the horse to infiltrate his ass. The stallion then rears up and post both its hooves on a bar so that the hooves will not be on Matt. Then the stallion starts to throw searching for his hole. Matt starts to prepare himself for the inevitable. Finally after four or five missed stab, the Equus caballus finds his hole. At first the horse can only fit the apple sized tip of his dick into his ass. The gymnastic horse then begins to thrust his dick further and further into his ass. Finally, after a span of minutes of the horse going cryptical and deeper into his ass the horse bottoms out and stall still for a duad of seconds. The nuisance is excruciating. Matt almost blacks out from having the horse shaft so far up his ass. Then the knight pulls out six inches and drive. He repeats this action and then forms a constant rhythm. The pain begins to settle and the delight kicks in. Before long he can feel his own shaft start to shoot down off on the trading floor. Then after ten minutes of straight fucking from the Equus caballus, he can finger the buck 's orb tense up. The Equus caballus then bottoms out and his pecker erupts with cum. The hot fluid feels so adept inside his Virgin ass. The ropes of cum cover the inside of his ass and begins to make his ass expand. The horse keeps cumming for about a instant. Finally the sawbuck full stop and right as the knight pulls its dick out of him the man puts a but punch in.

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



He then lowers the platform and takes the strap off Matt 's legs and hands and he collapses on the footing. He feels so bloated and he looks at his tum 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 form of good. Then he passes out on the floor….

Matt wakes up on the low temperature ground naked and looks at himself. His abdomen bulged with all the cum inside of him and his ass ached and Matt try to stomach up but can not. He looks around and saw that he is in a horses horse barn. He then turns and looks at his Twin sister lying succeeding to him naked. She too had a tum 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 back and her beautiful pussycat with just a little tuft of hair at the top of her slit. His peter starts to rise but at that Sami minute she woke up.

'' What happened '', proclaims Ally.

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

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

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

flatness then hears the threshold to the b open and eyes the man as he walks into their stable.

'' Rise and shine boys and lady friend '', the man says, `` I bet you have been wondering what the experiment I
preformed on you was for. I didn't want to separate you yesterday to baffle the surprise but here we go. Those 2 sawhorse yesterday that you had a trivial fun with, were rule. I genetically modified you and you sister to get impregnated by any tool. I also modified the prison term the pregnancy will rent to make water it go from 9 calendar month to 1 calendar month so you will feel alteration pretty soon. Another matter is that the reason I plugged up your jam from letting the cum seep out was because the creatures cum takes about 4 60 minutes to infuse you. The reason I wanted to do this was because I wanted to create the gravid Equus caballus ever. I could not do this with mating 2 cavalry together but I had to mate a horse with a human being because with a homo, the horse can be very intelligent. The grounds I picked you 2 was because you both have high IQ 's, are gymnastic and it looked like you could palm this. And I thought it would be fun to have a sidekick and sister. Oh, and by the way, my name is Dr. Jekyll Any questions ? ``

Matt speaks up, `` You can not be life-threatening, there is no way that I can be… pregnant. ``

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

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

'' Well your consistence will be changing to adapt the foals but it will still hurt very practically '', Dr. Jekyll
says, '' It will probably anguish more than a rule maternity so be prepared. You will delay here in this stable for the oddment of this pregnancy. Oh, and one More matter. ``

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

He then walks out of the stable leaving matte and Ally laying in piles of cum. They both sighed out of
relief when the cum was finally out of their pussycat and bottom.

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

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

mat then lays on the terra firma in his pool of cum, thinking about the consequence 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 buckets and brings them over to Ally.
friend gives lustrelessness a puzzled look and he just shrugs it off. He then takes a handful of the grain and puts chuck it. `` It 's not that bad '', says Matt.

'' Yeah right '', says Ally

She then tries the metric grain and agrees with mat. They could birth probably eaten anything at the second.
They had not eaten anything in awhile and they were both very hungry. They then took turns sipping water from the pail until the pail was drained. They then fall asleep on the cold concrete.

matte wakes up first the next dawning and tactile property different. He feels a weightiness on his chest and looks down and sees that he has some A-Cup boob. His pelvic girdle had widened too and his belly was a little bloated. His ass also did not find 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 giggle come from his sister.

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

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

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

'' Yeah '', Ally says, `` The Equus caballus big dick felt so good in my pussy. The better part was when he cummed, it
was so great that it gave me the dependable orgasm I had ever had. ''

'' Are those real ? '' Ally says pointing to her buddy tits.

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

She then walks over to mat and places her hands on his teat. matte was shaking in anticipation for this and lets out a pocket-size moan as she places her mitt on his nipple and starts to finger around. Ally then said to him, `` You can experience my knocker if you want. ``

lusterlessness then places his hands on his sisters B-Cup tits. Ally too lets out a low moan as he does this. friend 's titmouse felt so thoroughly in his hands. He had always admired them and now he was doing the thing he had only dreamt of doing. Her breast were the perfect sizing and they were still firm. flatness then wanted to take in it a little advance. He takes one hand off her tit and started to move it down her organic structure. He reaches her clit and starts to rub it.

Her body shook violently as the sexual climax went through her hale body. After the coming was over, she said to her brother, `` Now your bit. ``

She then grabbed his already hard cock and put it into her backtalk. She started to draw his cock and massaging his egg at the same time. matt could finger his sister sucking on his stopcock, licking the tip every once in awhile. Then he could experience his balls tense up and he said to Ally, I am going to cum. '' Matt could then feel Ally start to deep throat his turncock. Matt then erupted with cum and then sprout it all down his sisters throat.

Matt then took his hammer 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 wound his baby. Finally after a piffling of pushing, he could feel his ballock rub up against her ass.

'' Are you fix '', asks Matt.

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

Matt then pulls out and slam into his sis. He then started a rhythm and he could experience the precum dripping out. His cock flavour so in force with his sister pussy enveloping it. After what seems like an timelessness, Matt can feel his globe tense up and he goes hilt deep and come into his sister as hard as he can.

They both lay there for a few moments with Matt 's hawkshaw still in his Sister pussy and that 's when they heard person clapping.

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

Matt and Ally 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 trucking rig hard dick out of his sis pussy and a small stream of cum followed after that.

After a few awkward arcsecond, the Dr. Jekyll says, `` Well the ground I came here was because I needed to course your kids '', pointing towards there bulging stomachs, `` The effective 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 stalling where both their horses were kept.
The black one was Ally 's and the dark-brown one was Matt 's. `` fountainhead, I will pass on 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, `` Well I will go first to demonstrate you how it is done. ''

Matt watch as his sister takes the huge horse cock and sticks it in her mouth and starts to suck on it. Matt then watched as she took her custody and started to jack off the horses massive hawkshaw. Soon he can see the horses clod tense up and he knew what was going to happen. He could see her struggling to swallow the monolithic quantity 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 petite body. This turned matt 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 crony and said, `` Now it 's your turn '',

lusterlessness had not been thinking about what was about to happen. He walks over to his brown horse and starts to rub its cock. Soon the pecker is at to the full length and lustrelessness just stares at it.

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

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

matte then takes the unit peter and puts it into his mouth. He starts to blow on it at the same clip jacking off the horse with his workforce. flatness loves sucking the horse cavalry shaft. He can taste the precum oozing from the Equus caballus slit and he loves it. Soon the gymnastic horse balls tense up and send out rope of cum down Matt 's throat. Before yearn lusterlessness 's abdomen is full and he pulls out the cock from his mouth. The horses dick then starts to shoot cum all over matte 's body covering him from psyche to toe.

Dr. Jekyll then walks into the elbow room and says to the Twins, `` Oh, you two are a mickle, go back to your stalls. '' flatness and ally comply and follow them back to their horse barn. He then puts a bucket of cold water and a horse brush and says to them, `` You two should probably clean up. ''

They then grab the bucket and begin to cancel each former with it focusing on the `` sensitive '' areas mostly. This procedure goes on everyday for a duad of weeks. They wake up, have sex, get covered in cum, and then wash each other. Their bodies go through many more changes as well. Both of their hips get blanket enough to suit the gymnastic horse. There tits swell up in size of it too. They go all the way to the D-Cup and end. Their bear keep on expanding rapidly in sizing too. With about a week left wing, it looks like they are both having IV in their venter. They have to break off having sex because their bellies are so big but they can still experience each other up.

Then one day, Dr. Jekyll walk of life in the way with a box full of dildos. He says to the counterpart, `` Here, these are for lusterlessness. If you want to deliver this horse without any hurt then you will postulate to work on making your rectum big enough to fit this horse."

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

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

The man leaves and lusterlessness 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.

'' Sure '', friend says, `` Now get into the placement. ''

Matt gets on his hands and knees and friend chooses the smallest dildos and penetrates matt '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 ache the foal. She then worked her way up to the boastful dildo which was as wide as the horses dick. She did this every day until one day flatness had some discriminating pains in his tummy and soon after his Sister did too.

They both knew that their foals were coming and started to prepare their selves. Out of instinct, they both lay on their position because that is how horses normally give birth. They both yelled as they went through the start compression.

Dr. Jekyll then came running in and says, `` The appearance has just begun '', and brings a chair over to watch the festivity. They went through contraction after contraction together until 12 hours in, Matt felt that he needed to push. He started to agitate and could feel the gymnastic horse sliding down his Aspinwall. He pushed and pushed until he looked back and could see the head out. `` Almost there '', Matt thought. The botheration was excruciating. He kept pushing and pushing until the strawman peg popped out, then the back ramification popped out after and he was done. His foal crawled over to him and Matt pulled off the tissue layer from around it. The horse then started to suck on Matt 's tit. The tactile sensation 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 '', flatness says encouragingly, `` almost there. ''

Matt can see the header starting signal to come out of his sister pussy. friend keeps pushing and soon the front pegleg pop out and finally the rear legs. Ally sighs as her foal finally comes out. The two twins then go down asleep with their babies sucking on their tits.

They wake up the next day and they both feel unlike. Their bodies had gone back to normal. Matt no longer had tits and widened hips and Ally knocker and hips had gone done in size as well. They were perplexed. Then they could get a line the barn doors open and in walked Dr. Jekyll into their stall.

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

He looked at their perplex looks and says, `` There was one Thomas More thing that I did not state you about when I modified your bodies. After you give birth, the variety that were made revert back and you look just like you did a month ago. Unless you want to observe 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 calendar 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 letters about all the fun you have been having. Do not severalize anyone about what happened today unless you want me to discharge a television documenting what happened. From you having sex with each early, with a horse cavalry, and giving birth. Are we light up ? ``

They both nod in accord. He then tosses in some apparel and tells them to get dressed

Matt had gotten so exploited to be naked all the time that the clothes feel Wyrd. They then look at each other and flatness knows that animation will never be the same .