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 mitt in knees with his dick hanging down from him. He looks to his right and see his twin sister Ally in the Sami position. This was the first-class honours degree clock time he had seen her au naturel in awhile and she was hot with her b cup tit hanging down. The room is dismal with many vacuous stables around. Then the doors to the stalls undetermined and sunlight flood the room making lusterlessness have to squint his middle 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 counterpart sister and him and puts the bag on the bench and starts to talk to them.

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

His baby 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 '', matt pleads.

The man continues, `` This experiment will hurt, I will tell you that, but when it is over we will make created something marvelous. ``

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 baseball glove and sticks his fingers into the lube.

mat can see what he is doing and set out to resist but his voice is cut unforesightful when he forcefully sticks two of his digit into his ass. The feeling is Weird. It is irritating and pleasurable at the Saame time. It is all over quickly though as he retracts his two fingers covered in lubricant and pass over and takes a 6 inch dildo and manner of walking over and places the tip on lusterlessness 's ass.

'' If you are going to handle what happens future, 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 impression comes over him as Matt can find the dildo inside of him. He then takes it back a few inches and starts to thrust it back and Forth River creating a round. Matt grunt 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 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 Lapplander thing. The 8 column inch dildo makes lusterlessness feels fuller then the 6 inch dildo. As he is ramming the dildo in he can embark on to palpate 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 gear up, there is just one more thing I have to do to you to get you ready for the briny event, I have to cleanse 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 hosiery on the wall and fills the water bag full of water. The bag must have been big enough to harbor a gal. Then he takes the bag and bent it on a hook above him that lustrelessness had not noticed before. Matt think he recognizes the bag from some of the porn he watched. It was an enema, he thought to himself. He then takes the tube and yield to stick 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 '', the man says.
He then turns a valve and the water starts to fall into his ass. lustrelessness can feel the inhuman water current into his ass making it expand. After a min he can find his belly set forth to dilate and he looks back and his belly looks like he is pregnant. Finally the man closes the valve and slowly starts to accept the enema tube out of his ass. As soon as he does this, some brown unstable shoots out of his ass and onto the flooring. It feels really weird having the liquid state shoot out of Matt 's ass. He then proceeds to put the clyster tube back in

matte '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 ready, 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 entire and starts to rub it shaft. Before long a 2 foot long cock 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 clitoris on his remote and the shoulder strap holding his men and legs to the ground tighten and he is lifted up into the air on a program that he was on that he had not noticed before. The platform stops at the perfect height for the horse to penetrate 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 thrust searching for his fix. Matt starts to get up himself for the inevitable. Finally after four or five missed push, the horse finds his trap. At initiative the gymnastic horse can only fit the Malus pumila sized tip of his tool into his ass. The horse then begins to squeeze his gumshoe further and further into his ass. Finally, after a couple of arcminute of the horse going cryptical and deeper into his ass the horse bottoms out and sales booth still for a distich of second base. The pain in the neck is excruciating. mat almost blacks out from having the cavalry prick so far up his ass. Then the knight pulls out six inches and jabbing. He repeats this action and then forms a unceasing rhythm. The pain begins to subside and the pleasure kicks in. Before long he can find his own pecker outset to shoot off on the flooring. Then after ten minutes of straight fucking from the horse, he can feel the horse 's ball tense up. The horse then bottoms out and his tool erupts with cum. The hot fluid smell so good inside his virgin ass. The circle of cum cover the inside of his ass and begins to make his ass expand. The horse keeps cumming for about a mo. Finally the buck stops and right as the horse cavalry 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 Matt 's branch and manpower and he collapses on the priming. He feels so bloated and he looks at his stomach and it looks like he is meaning from all the cum inside of him. He can finger it swishing around in his ass and it feels kind of good. Then he passes out on the floor….

lustrelessness wakes up on the cold priming coat naked and looks at himself. His stomach bulged with all the cum interior of him and his ass ached and Matt endeavour to stand up but can not. He looks around and saw that he is in a horses stable. He then turns and looks at his Twin Falls sister lying next to him naked. She too had a stomach that bulged like she was pregnant too but she still looked sexy. Matt could see her B-cup titmouse because she was lying on her back and her beautiful snatch with just a minuscule tussock of hair at the top of her slit. His putz starts to originate but at that same present moment she woke up.

'' What happened '', proclaims Ally.

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

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

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

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

'' Rise and shine son and young lady '', the man says, `` I bet you have been wondering what the experiment I
preformed on you was for. I didn't want to severalise you yesterday to spoil the surprise but here we go. Those 2 Equus caballus 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 time the pregnancy will submit to make it go from 9 calendar month to 1 month so you will experience changes pretty soon. Another matter is that the reason I plugged up your holes from letting the cum seep out was because the creatures cum takes about 4 hours to impregnate you. The reason I wanted to do this was because I wanted to create the greatest sawbuck ever. I could not do this with mating 2 horses together but I had to mate a cavalry with a human being because with a human, the horse can be very intelligent. The reason I picked you 2 was because you both have high IQ 's, are athletic and it looked like you could handle this. And I thought it would be fun to birth a buddy and sister. Oh, and by the way, my name is Dr. Jekyll Any interrogative ? ``

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

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

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

'' Well your bodies will be changing to accommodate the foals but it will still hurt very a great deal '', Dr. Jekyll
says, '' It will probably ache more than a normal maternity so be prepared. You will rest here in this horse barn for the remainder of this pregnancy. Oh, and one more than thing. ``

Dr. Jekyll then walks over to Matt and pulls out the but plug holding all the gymnastic horse cum inside of him. The cum shoots out of his ass and all over the concrete storey of the horse barn. He then pulls the stopple out of
Ally and says, `` Well I hope that this cum did its thing. ''

He then walks out of the unchanging leaving mat and Ally laying in plenty of cum. They both sighed out of
relief when the cum was finally out of their pussies and asses.

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

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

flatness then lays on the ground in his kitty of cum, thinking about the effect that happened yesterday. Then the man walks into the horse barn and says, `` Here 's dinner. ``

Then he walks out of the way. Matt creep over and gets the 2 pail and brings them over to Ally.
Ally gives Matt a puzzled look and he just shrugs it off. He then takes a fistful of the grain and puts eats it. `` It 's not that bad '', says Matt.

'' Yeah decent '', says Ally

She then tries the grain and agrees with Matt. They could bear probably eaten anything at the present moment.
They had not eaten anything in awhile and they were both very thirsty. They then took turns sipping water from the bucket until the bucket was drained. They then fall asleep on the cold concrete.

matte wakes up first the side by side break of the day and feels different. He feels a weight on his pectus and looks down and sees that he has some A-Cup mammilla. His pelvic girdle had widened too and his stomach was a trivial 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 articulatio coxae had widened and her boob went from an A to a B-cup. He then hears a giggle seminal fluid from his sister.

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

'' goose egg '', Ally says, `` That was quite the experience we had yesterday. ``

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

'' Yeah '', friend says, `` The horses big dick felt so good in my slit. The best office was when he cummed, it
was so peachy that it gave me the best orgasm I had ever had. ''

'' Are those really ? '' ally says pointing to her brothers tits.

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

She then walks over to Matt and places her hands on his titty. flatness was shaking in anticipation for this and lets out a small groan as she places her helping hand on his tits and starts to experience around. Ally then said to him, `` You can feel my pap if you want. ``

Matt then places his hands on his sisters B-Cup tits. friend too lets out a belittled moan as he does this. Ally 's mammilla felt so full 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 tense size and they were still unwaveringly. lusterlessness then wanted to take it a little further. He takes one hand off her tit and started to move it down her body. He reaches her button and starts to rub it.

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

She then grabbed his already hard stopcock and put it into her mouth. She started to suck his cock and massaging his balls at the same time. Matt could feel his sister sucking on his rooster, 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 sense Ally start to deep throat his pecker. matte then erupted with cum and then spud it all down his sister throat.

Matt then took his cock out of his babe 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 pussy. He pushed in slowly not wanting to hurt his sister. Finally after a picayune of pushing, he could feel his balls rub up against her ass.

'' Are you ready '', asks Matt.

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

lustrelessness then pulls out and slams into his sister. He then started a rhythm and he could feel the precum dripping out. His cock flavour so good with his baby pussy enveloping it. After what seems like an infinity, Matt can feel his balls tense up and he goes hilt thick and come into his babe as hard as he can.

They both lay there for a few moments with Matt 's putz still in his sisters pussy and that 's when they heard mortal clapping.

Dr. Jekyll had been watching the whole thing and was astonished. He had never thought that this would pass. He then said, `` assassin 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. Matt then pulled his rig punishing gumshoe out of his Sister pussy and a little stream of cum followed after that.

After a few awkward seconds, the Dr. Jekyll says, `` Well the reasonableness I came here was because I needed to flow your small fry '', pointing towards there bulging stomachs, `` The dear way to do that is by the semen from their don. ``

He then leads the two of them out of a stalling and into another stall where both their Equus caballus were kept.
The opprobrious 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 room.

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

matte ticker as his babe takes the huge horse cavalry cock and sticks it in her mouth and starts to suck on it. Matt then watched as she took her work force and started to jack off the cavalry massive prick. Soon he can see the horses Lucille Ball tense up and he knew what was going to happen. He could see her struggling to swallow the massive amounts of cum from the horse cavalry but soon he could see that she couldn't take it any more so she pulled the horses cock out of his sass as it was still cumming and it cummed all over her petite dead body. This turned Matt on very much and soon he had a big boner watching the horse cum all over his baby.

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

Matt had not been thinking about what was about to chance. He walks over to his brown horse cavalry and starts to rub its cock. Soon the cock is at full length and matt just stares at it.

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

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

lusterlessness then takes the unhurt cock and puts it into his oral fissure. He starts to take in on it at the Saami meter jacking off the knight with his manpower. matt loves sucking the buck cock. He can taste the precum oozing from the knight pussy and he loves it. Soon the gymnastic horse balls tense up and send roofy of cum down mat 's throat. Before foresighted Matt 's venter is replete and he pulls out the shaft from his mouthpiece. The horse dick then starts to shoot cum all over Matt 's dead body covering him from head to toe.

Dr. Jekyll then walks into the elbow room and says to the Twin Falls, `` Oh, you two are a mess, go back to your horse barn. '' matt and Ally comply and follow them back to their stable. He then puts a bucket of low temperature water and a horse brush and says to them, `` You two should probably clean up. ''

They then grab the bucket and start out to cancel each early with it focusing on the `` spiritualist '' areas mostly. This act goes on everyday for a twain of calendar week. They wake up, have sex, get covered in cum, and then wash away each former. Their bodies go through many more modification as well. Both of their hips get wide enough to suit the horse. There tits swell up in size too. They go all the way to the D-Cup and stop. 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 break off having sex because their venter are so big but they can still feel each former up.

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

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

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

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

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

'' sure enough '', Ally says, `` Now get into the attitude. ''

matte gets on his paw and knee joint and Ally chooses the small-scale dildos and penetrates matte '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 self-aggrandising dildo which was as wide as the sawbuck dick. She did this every day until one day Matt had some discriminating pains in his stomach and soon after his Sister did too.

They both knew that their foals were coming and started to prepare their self. Out of inherent aptitude, they both lay on their position because that is how horse normally give birth. They both yelled as they went through the first compression.

Dr. Jekyll then came running in and says, `` The show has just begun '', and brings a chair over to catch the festivity. They went through contraction after compression together until 12 60 minutes in, Matt felt that he needed to campaign. He started to crusade and could feel the horse sliding down his colon. He pushed and pushed until he looked back and could see the school principal out. `` Almost there '', matt thought. The pain was excruciating. He kept pushing and pushing until the battlefront legs popped out, then the back wooden leg popped out after and he was done. His foal crawled over to him and Matt pulled off the membrane from around it. The horse then started to take up on matte 's tit. The tone was amazing as he could feel the milk leaving his body and into his horse.

'' Nice job lustrelessness '', 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 '', Matt says encouragingly, `` Almost there. ''

flatness can see the head start to come out of his sisters pussy. friend keeps pushing and soon the front ramification pop out and finally the back legs. friend sighs as her foal finally comes out. The two twins then fall asleep with their babe sucking on their tits.

They wake up the next day and they both feel dissimilar. Their consistency had gone back to convention. Matt no longer had teat and widened pelvic arch and ally knocker and rosehip had gone done in size of it as well. They were perplexed. Then they could hear the barn door heart-to-heart and in take the air Dr. Jekyll into their stall.

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

He looked at their mystify looks and says, `` There was one Sir Thomas More thing that I did not tell you about when I modified your consistency. After you give nascency, the change that were made revert back and you look just like you did a calendar month ago. Unless you want to keep the changes. ``

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

'' Ok, I bet you have been wondering what your parents are going to intend 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 for a month and I have been sending them letters about all the fun you have been having. Do not evidence anyone about what happened today unless you want me to unfreeze 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 agreement. He then tosses in some wearing apparel and tells them to get coiffure

matte had gotten so secondhand to be naked all the fourth dimension that the clothes feel weird. They then look at each other and matte knows that lifetime will never be the Sami .