Matt wakes up and looks around groggily at his environment 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 hand and see his Twin sister Ally in the Same side. This was the first time he had seen her raw in awhile and she was hot with her b cup tits hanging down. The room is dark with many empty stalls around. Then the threshold to the stable open and sunlight floods the way making lustrelessness have to squint his middle to see what is happening. The doorway closes quickly and he can clearly see a man walking into the room with a big bag. He walks over to his twin sis 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 experimentation and you were chosen because of some certain qualities… ''

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

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

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

Then he opens his bag and takes out some lubricator and an assortment of dildos. He puts on a glove and sticks his finger's breadth into the lube.

lusterlessness can see what he is doing and set out to resist but his voice is cut short when he forcefully sticks two of his finger into his ass. The feeling is uncanny. It is abominable and enjoyable at the same meter. It is all over quickly though as he retracts his two digit covered in lubricator and walkway over and takes a 6 inch dildo and pass over and places the tip on Matt 's ass.

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

He pushes the dildo slowly into his ass before finally bottoming out. The same feeling comes over him as Matt can feel the dildo inside of him. He then takes it back a few in and starts to lunge it back and Forth River creating a rhythm. Matt grunt from exertion as he is doing this. Then something really Wyrd happens, he starts to get a boner. He had never been gay in his life so he thinks that it is odd that he gets a pratfall.

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 inch dildo makes Matt feel fuller then the 6 inch dildo. As he is ramming the dildo in he can start to feel his ass getting looser and looser.

After about five mo of the man ramming the dildo in his ass the man says to him, `` You are almost ready, there is just one more affair I have to do to you to get you ready for the briny event, I have to houseclean you from the interior 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 paries and fills the weewee bag full of water system. The bag must have been big enough to hold a gallon. Then he takes the bag and hang 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 tube and return to dumbfound it right into his already loosened ass.

'' I am going to take you to be really clean in there if my experimentation is going to work '', the man says.
He then turns a valve and the piss starts to fall into his ass. Matt can feel the common cold H2O menstruation into his ass making it expand. After a arcminute he can palpate his belly protrude to amplify and he looks back and his belly looks like he is fraught. Finally the man closes the valve and slowly starts to strike the enema tube out of his ass. As soon as he does this, some brown fluid 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 enema tube back in

matte 's ass and does 3 prison term 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 threshold to the barn exposed and a man walks in directing a stallion behind him. `` Oh no '', lustrelessness thinks to himself, `` this ca n't be. ``

The man then walks over to the stallion and starts to rub it rooster. Before long a 2 fundament recollective cock natural spring out from the horse.

Matt says to the man, `` There is no way that this horses hammer 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 mitt and peg to the dry land tighten and he is lifted up into the air on a platform that he was on that he had not noticed before. The weapons platform stops at the unadulterated elevation for the horse to penetrate his ass. The stallion then rears up and home both its hooves on a bar so that the hooves will not be on matte. Then the stallion starts to force searching for his hole. lusterlessness starts to organise himself for the inevitable. Finally after four or five missed knife thrust, the buck finds his hole. At first the horse can only fit the apple sized tip of his putz into his ass. The horse then begins to thrust his dick further and further into his ass. Finally, after a couple of minute of the horse going deeper and deeper into his ass the horse bottoms out and stands still for a duet of seconds. The pain in the ass is excruciating. mat almost blacks out from having the cavalry prick so far up his ass. Then the buck pulls out six inch and poke. He repeats this natural action and then forms a constant rhythm method of birth control. The pain begins to lessen and the pleasure kicks in. Before long he can sense his own tool start to shoot off on the floor. Then after ten proceedings of straight fucking from the horse cavalry, he can feel the sawhorse 's lump tense up. The Equus caballus then bottoms out and his cock erupts with cum. The hot fluid smell so good inside his virgin ass. The ropes of cum cover the inside of his ass and begins to prepare his ass expand. The horse keeps cumming for about a minute. Finally the buck stops and right as the horse pulls its putz 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 program and takes the strap off mat 's legs and hands and he collapses on the ground. He feels so bloated and he looks at his venter and it looks like he is pregnant from all the cum interior of him. He can feel it swishing around in his ass and it feels sort of good. Then he passes out on the floor….

Matt wakes up on the cold background naked and looks at himself. His venter bulged with all the cum inside of him and his ass ached and flatness endeavor to resist 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 future to him defenseless. She too had a stomach that bulged like she was fraught too but she still looked aphrodisiac. matte could see her B-cup tits because she was lying on her back and her beautiful pussy with just a little tussock of fuzz at the top of her slit. His cock starts to grow but at that Sami moment she woke up.

'' What happened '', proclaims Ally.

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

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

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

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

'' rise and shine son 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 tell you yesterday to spoil the surprise but here we go. Those 2 sawhorse yesterday that you had a piddling fun with, were normal. I genetically modified you and you sister to get impregnated by any creature. I also modified the time the pregnancy will need to wee-wee it go from 9 month to 1 month so you will sense change pretty soon. Another thing is that the understanding I plugged up your mess from letting the cum seep out was because the wight cum takes about 4 hours to impregnate you. The reason I wanted to do this was because I wanted to create the greatest Equus caballus 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 sound. The reason I picked you 2 was because you both have high IQ 's, are gymnastic and it looked like you could handle this. And I thought it would be fun to possess a brother and Sister. Oh, and by the way, my gens is Dr. Jekyll Any questions ? ``

mat 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 specific. Any more questions ? ``

'' 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 wound very much '', Dr. Jekyll
says, '' It will probably hurt more than than a normal pregnancy so be prepared. You will continue here in this horse barn for the balance of this maternity. Oh, and one more affair. ``

Dr. Jekyll then walks over to Matt and pulls out the but plug holding all the sawhorse cum inside of him. The cum shoots out of his ass and all over the concrete floor of the stable. He then pulls the plug out of
Ally and says, `` well I hope that this semen did its affair. ''

He then walks out of the horse barn leaving lusterlessness and friend laying in piles of cum. They both sighed out of
rest period when the cum was finally out of their twat and can.

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

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

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

Then he walks out of the room. mat creeping over and gets the 2 pail and brings them over to Ally.
ally gives matt a nonplussed spirit 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 on '', says friend

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

mat wakes up first the next dayspring and feels different. He feels a weight unit on his bureau and looks down and sees that he has some A-Cup tits. His articulatio coxae had widened too and his stomach was a little bloated. His ass also did not finger sore anymore. He looks over and sees his sister awake as well. He could see that she also had changes. Her hip had widened and her tits went from an A to a B-cup. He then hears a giggle come from his baby.

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

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

'' Yeah '', mat says, `` It hurt at offset but after awhile it felt really in effect. ``

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

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

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

She then walks over to Matt and places her custody on his pap. matt was shaking in anticipation for this and lets out a humble moan as she places her script on his tits and starts to feel around. Ally then said to him, `` You can experience my titmouse if you want. ``

mat then places his paw on his sister B-Cup tits. Ally too lets out a small moan as he does this. ally 's nipple 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 mammilla were the consummate size of it and they were still firm. matte then wanted to have it a little far. He takes one helping hand off her tit and started to displace it down her body. He reaches her clit and starts to rub it.

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

She then grabbed his already hard shaft and put it into her mouth. She started to suck his dick and massaging his balls at the Lapp sentence. Matt could feel his sister sucking on his cock, licking the tip every once in awhile. Then he could sense his Lucille Ball tense up and he said to Ally, I am going to cum. '' Matt could then feel Ally start to deep throat his rooster. lustrelessness then erupted with cum and then spud it all down his sisters throat.

matte then took his cock out of his sis pharynx and picked her up and laid her in a niche on the hay. He then took his 8 inch cock and directed it into her awaiting kitty. He pushed in slowly not wanting to smart his sister. Finally after a little of pushing, he could palpate his bollock rub up against her ass.

'' Are you make '', asks Matt.

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

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

They both lay there for a few moments with Matt 's dick still in his baby pussy and that 's when they heard someone clapping.

Dr. Jekyll had been watching the entirely affair and was astonished. He had never thought that this would happen. He then said, `` assassinator 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 someone had seen them do it. lustrelessness then pulled his trailer truck hard putz out of his sisters pussy and a little stream of cum followed after that.

After a few awkward bit, the Dr. Jekyll says, `` Well the cause I came here was because I needed to feed your tiddler '', pointing towards there bulging tummy, `` The unspoiled way to do that is by the come from their fathers. ``

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

They both stand there for a few arcminute when Ally says, `` fountainhead I will go first to picture you how it is done. ''

Matt watches as his baby takes the huge horse cavalry cock and joint it in her mouth and starts to suck in on it. matt then watched as she took her mitt 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 happen. He could see her struggling to take back 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 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 chum and said, `` Now it 's your turn '',

matt had not been thinking about what was about to find. He walks over to his brown horse and starts to rub its prick. Soon the cock is at total 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 whole rooster and puts it into his sass. He starts to suck on it at the Same time jacking off the horse with his manus. Matt loves sucking the sawbuck cock. He can try the precum oozing from the horses slit and he loves it. Soon the horse cavalry balls tense up and send ropes of cum down mat 's throat. Before recollective lustrelessness 's stomach is wide-cut and he pulls out the cock from his rima oris. The horses dick then starts to shoot cum all over lustrelessness 's body covering him from head to toe.

Dr. Jekyll then walks into the way and says to the twins, `` Oh, you two are a hole, go back to your horse barn. '' mat and friend comply and follow them back to their stable. He then puts a pail of cold H2O and a Equus caballus brush and says to them, `` You two should probably houseclean up. ''

They then grab the bucket and begin to scrub up each other with it focusing on the `` sensitive '' surface area mostly. This bit goes on everyday for a couple of workweek. They wake up, have sex, get covered in cum, and then wash off each other. Their bodies go through many more changes as well. Both of their hips get all-inclusive enough to accommodate the horse. There tits swell up in size too. They go all the way to the D-Cup and intercept. Their belly hold back expanding rapidly in size of it too. With about a week left, it looks like they are both having Little Joe in their abdomen. They have to stop having sex because their bellies are so big but they can still find each former up.

Then one day, Dr. Jekyll base on balls in the elbow room with a box fully of dildos. He says to the Twin, `` Here, these are for Matt. If you want to bear this horse without any damage then you will require to work on on making your rectum big enough to suit this horse."

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

'' You should be mulct, women are meant to present nascency 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 '', lustrelessness say to Ally.

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

lusterlessness gets on his hands and knees and Ally chooses the smallest dildos and penetrates Matt 's ass slowly. mat moans because he had been craving having the horse dick in his ass for awhile but he knew that it would suffer the foal. She then worked her way up to the expectant dildo which was as wide as the sawbuck hawkshaw. She did this every day until one day matt had some acuate pains in his stomach and soon after his Sister did too.

They both knew that their foals were coming and started to prepare their selves. Out of inherent aptitude, they both lay on their sides because that is how horses normally give birth. They both yelled as they went through the commencement 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 contraction after contraction together until 12 hour in, flatness felt that he needed to push. He started to labor and could find the horse sliding down his colon. He pushed and pushed until he looked back and could see the head out. `` Almost there '', lusterlessness thought. The pain sensation was excruciating. He kept pushing and pushing until the social movement legs popped out, then the back stage 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 blow on Matt 's tit. The feeling was amazing as he could feel the Milk River 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 '', Matt says encouragingly, `` well-nigh there. ''

Matt can see the mind jump to come out of his sisters pussy. Ally keeps pushing and soon the front stage pop out and finally the book binding legs. friend sighs as her foal finally comes out. The two similitude then fall asleep with their baby sucking on their tits.

They wake up the following day and they both feel dissimilar. Their torso had gone back to normal. Matt no longer had tit and widened hips and ally tits and hips had gone done in size of it as well. They were perplexed. Then they could listen the b doors open and in walked Dr. Jekyll into their stall.

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

He looked at their beat aspect and says, `` There was one more thing that I did not say you about when I modified your physical structure. 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 prevent the changes. ``

'' No, no '', says the Gemini 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. fountainhead, when I kidnapped you, your parents were going to send you to camp down for a month and I have been sending them missive about all the fun you have been having. Do not tell anyone about what happened today unless you want me to release a video documenting what happened. From you having sex with each other, with a sawbuck, and giving birth. 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 time that the wearing apparel feel weird. They then look at each other and Matt knows that life will never be the same .