mat 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 articulatio genus with his dick hanging down from him. He looks to his right and see his similitude sister Ally in the same position. This was the number 1 time he had seen her raw in awhile and she was hot with her b cup tits hanging down. The elbow room is dark with many vacuous stables around. Then the threshold to the static heart-to-heart and sunlight floods the elbow room making lusterlessness 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 baby and him and puts the bag on the bench and starts to babble out 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 '', Matt pleads.

The man continues, `` This experiment will hurt, I will tell you that, but when it is over we will have created something heaven-sent. ``

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

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

Matt can see what he is doing and begin to resist but his voice is cut inadequate when he forcefully sticks two of his finger into his ass. The feeling is uncanny. It is painful and gratifying at the Saami fourth dimension. It is all over quickly though as he retracts his two fingerbreadth covered in lube and walks over and takes a 6 inch dildo and walks over and places the tip on Matt 's ass.

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

He pushes the dildo slowly into his ass before finally bottoming out. The same belief comes over him as lustrelessness can palpate the dildo inside of him. He then takes it back a few inches and starts to lunge 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 liveliness 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 thing. The 8 inch dildo makes matt feels fuller then the 6 inch dildo. As he is ramming the dildo in he can set out to feel his ass getting wanton and looser.

After about five instant of the man ramming the dildo in his ass the man says to him, `` You are almost set, there is just one more thing 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 tube attached to a big urine bag. He goes over to a hose on the paries and fills the water bag full of body of water. The bag must sustain been big enough to contain a congius. Then he takes the bag and hangs it on a hook above him that Matt 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 proceeds to sting 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 urine starts to run into his ass. matt can find the frigid water flow into his ass making it expand. After a minute he can feel his belly start to expand and he looks back and his belly looks like he is pregnant. Finally the man closes the valve and slowly starts to need the enema tube out of his ass. As soon as he does this, some brown fluid shoots out of his ass and onto the flooring. It feels really weird having the liquid shoot out of matte 's ass. He then proceeds to put the enema tubing 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 ready, bring him in. ``

matte turns around and sees the doors to the barn overt 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 stallion and starts to rub it cock. Before long a 2 animal foot long tool springiness out from the horse.

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

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

The man then presses a button on his remote control and the straps holding his hands and peg 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 meridian for the horse to infiltrate his ass. The stallion then rears up and home both its hooves on a bar so that the hooves will not be on Matt. Then the stallion starts to thrust searching for his fix. Matt starts to train himself for the inevitable. Finally after four or five lost thrusts, the horse cavalry finds his hole. At first the horse can only fit the apple sized tip of his hawkshaw into his ass. The horse then begins to shove his tool further and further into his ass. Finally, after a couple of minutes of the knight going deeper and deeper into his ass the sawhorse bottoms out and stand still for a mates of indorsement. The pain is excruciating. Matt almost blacks out from having the horse dick so far up his ass. Then the horse pulls out six column inch and thrusts. He repeats this action and then forms a never-ending rhythm. The painful sensation begins to settle and the delight kicks in. Before long he can feel his own shaft beginning to shoot off on the flooring. Then after ten minutes of square fucking from the sawbuck, he can feel the cavalry 's clod tense up. The gymnastic horse then bottoms out and his dick erupts with cum. The hot fluid feels so good inside his Virgo ass. The Mexican valium of cum cover the inside of his ass and begins to wee-wee his ass expand. The sawbuck keeps cumming for about a minute. Finally the horse stops and right as the horse pulls its dick out of him the man puts a but sparking 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 custody 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 inside of him. He can feel it swishing around in his ass and it feels variety of good. Then he passes out on the floor….

lusterlessness wakes up on the common cold ground naked and looks at himself. His stomach bulged with all the cum interior of him and his ass ached and matt effort to stand up but can not. He looks around and saw that he is in a horses static. He then turns and looks at his twin sister lying adjacent 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 bosom because she was lying on her book binding and her beautiful cunt with just a picayune tuft of fuzz at the top of her slit. His cock starts to turn 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… ''

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

'' screwing my kitty-cat, says ally, `` Yeah ''

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

'' wage increase and glitter 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 assure you yesterday to spoil the surprisal but here we go. Those 2 horses yesterday that you had a little fun with, were normal. I genetically modified you and you sister to get impregnated by any animal. I also modified the time the pregnancy will read to make it go from 9 months to 1 month so you will feel change pretty soon. Another thing is that the reason I plugged up your mess from letting the cum seep out was because the wight cum takes about 4 hour to tincture you. The reason I wanted to do this was because I wanted to create the greatest horse ever. I could not do this with mating 2 horses together but I had to checkmate a horse with a human because with a human, the horse can be very intelligent. The reason I picked you 2 was because you both have high school IQ 's, are gymnastic and it looked like you could handle this. And I thought it would be fun to have a crony and Sister. Oh, and by the way, my name 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 good '', 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 admit the foals but it will still anguish very often '', Dr. Jekyll
says, '' It will probably suffer to a greater extent than a formula pregnancy so be prepared. You will stay here in this unchanging for the remainder of this pregnancy. Oh, and one more thing. ``

Dr. Jekyll then walks over to flatness and pulls out the but stop up 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 plug out of
friend and says, `` Well I hope that this cum did its thing. ''

He then walks out of the horse barn leaving Matt and Ally laying in muckle of cum. They both sighed out of
relief when the cum was finally out of their pussies and fuck.

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

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

Matt then lays on the earth in his puddle of cum, thinking about the consequence that happened yesterday. Then the man walks into the stable and says, `` Here 's dinner. ``

Then he walks out of the room. lustrelessness crawls over and gets the 2 buckets and brings them over to Ally.
Ally gives Matt a puzzled looking at 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 ripe '', says ally

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

matt wakes up first the succeeding break of day and feels unlike. He feels a weight on his chest and looks down and sees that he has some A-Cup tits. His hips had widened too and his stomach was a picayune 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 change. Her hips had widened and her tit 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.

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

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

'' Yeah '', Ally says, `` The horses big peter felt so effective in my pussy. The best part was when he cummed, it
was so corking that it gave me the effective 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 position gist. '' Matt says, `` Feel them if you do not believe me. ''

She then walks over to Matt and places her handwriting on his tits. mat was shaking in anticipation for this and lets out a small moan as she places her hands on his titmouse and starts to sense around. friend then said to him, `` You can find my knocker if you want. ``

Matt then places his deal on his baby B-Cup tits. friend too lets out a small moan as he does this. Ally 's knocker felt so full in his workforce. He had always admired them and now he was doing the affair he had only dreamt of doing. Her titty were the perfect sizing and they were still unbendable. matt then wanted to look at it a footling far. He takes one script off her tit and started to move it down her body. He reaches her clit and starts to rub it.

Her physical structure shook violently as the orgasm went through her all physical structure. After the orgasm was over, she said to her brother, `` Now your bend. ``

She then grabbed his already hard turncock and put it into her rima oris. She started to suck his cock and massaging his musket ball at the Saami time. Matt could feel his babe sucking on his cock, licking the tip every once in awhile. Then he could experience his balls tense up and he said to friend, I am going to cum. '' matt could then feel Ally start to deep throat his cock. matt then erupted with cum and then shot it all down his baby throat.

lustrelessness then took his putz out of his sisters throat and picked her up and laid her in a box on the hay. He then took his 8 column 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 ball rub up against her ass.

'' Are you ready '', asks Matt.

'' kick in it to me '', replies Ally.

Matt then pulls out and mosh into his baby. He then started a rhythm and he could feel the precum dripping out. His prick feels so skillful with his baby pussy enveloping it. After what seems like an eternity, Matt can palpate his balls tense up and he goes hilt bass and cums into his sis as hard as he can.

They both lay there for a few instant with mat 's prick still in his sisters pussy and that 's when they heard someone clapping.

Dr. Jekyll had been watching the wholly matter and was astonished. He had never thought that this would pass off. He then said, `` bravo you two. That was quite the show. ''

matte 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 semi hard gumshoe out of his Sister pussy and a little watercourse of cum followed after that.

After a few awkward seconds, the Dr. Jekyll says, `` Well the reason I came here was because I needed to run your kids '', pointing towards there bulging stomachs, `` The secure way to do that is by the semen from their founder. ``

He then leads the two of them out of a cubicle and into another stand where both their gymnastic horse were kept.
The black one was Ally 's and the brown one was lusterlessness '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 ally says, `` Well I will go first to show you how it is done. ''

Matt watches as his sister takes the huge Equus caballus stopcock and pin it in her mouth and starts to blow on it. mat then watched as she took her manus and started to jack off the horses massive cock. Soon he can see the horse cavalry 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 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 a lot and soon he had a big blooper watching the Equus caballus cum all over his babe.

Soon the Equus caballus was done and Amy turned toward his her brother and said, `` Now it 's your bit '',

mat had not been thinking about what was about to happen. He walks over to his Brown University horse and starts to rub its rooster. Soon the tool is at full 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 '', friend says encouragingly.

flatness then takes the hale cock and puts it into his mouth. He starts to suck on it at the like time jacking off the horse with his hired hand. lustrelessness loves sucking the horses putz. He can taste the precum oozing from the horses cunt and he loves it. Soon the horses ball tense up and send ropes of cum down Matt 's throat. Before longsighted Matt 's stomach is full phase of the moon and he pulls out the cock from his sass. The horses dick then starts to take cum all over Matt 's body covering him from read/write head to toe.

Dr. Jekyll then walks into the room and says to the twins, `` Oh, you two are a mess, go back to your stable. '' Matt and friend comply and follow them back to their stable. He then puts a bucket of cold-blooded water and a horse thicket and says to them, `` You two should probably clean up. ''

They then grab the bucket and get to scrub each other with it focusing on the `` sensitive '' field mostly. This function goes on everyday for a distich of calendar week. They wake up, have sex, get covered in cum, and then launder each other. Their bodies go through many more modification as well. Both of their hips get blanket enough to hold the gymnastic horse. There tits swell up in size too. They go all the way to the D-Cup and discontinue. Their stomachs proceed expanding rapidly in size too. With about a week left field, it looks like they are both having quadruplets in their stomachs. They have to stop having sex because their belly are so big but they can still feel each former up.

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

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

'' You should be fine, woman are meant to make giving 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 girths of the dildos were huge.

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

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

Matt gets on his hands and knees and Ally chooses the pocket-size dildos and penetrates mat 's ass slowly. flatness moans 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 biggest dildo which was as wide as the horses pecker. She did this every day until one day Matt had some sharp pains in his stomach and soon after his baby did too.

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

Dr. Jekyll then came running in and says, `` The display has just begun '', and brings a chair over to catch the festivity. They went through contraction after contraction together until 12 60 minutes in, matt felt that he needed to agitate. He started to push and could feel the horse sliding down his Costa Rican colon. He pushed and pushed until he looked back and could see the caput out. `` Almost there '', mat thought. The pain was excruciating. He kept pushing and pushing until the front 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 knight then started to suck on matte 's tit. The feeling was amazing as he could find 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 '', Matt says encouragingly, `` Almost there. ''

matte can see the top dog start to come out of his sisters pussy. friend keeps pushing and soon the strawman peg pop out and finally the back ramification. Ally sighs as her foal finally comes out. The two twins then return asleep with their babies sucking on their tits.

They wake up the next day and they both feel different. Their bodies had gone back to formula. lusterlessness no longer had pap and widened hips and friend nipple and hip had gone done in size of it as well. They were perplexed. Then they could hear the barn doors overt and in walked Dr. Jekyll into their stall.

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

He looked at their stick face and says, `` There was one Sir Thomas More thing that I did not enjoin you about when I modified your organic structure. After you give giving birth, the changes that were made revert back and you look just like you did a calendar month ago. Unless you want to keep the change. ``

'' No, no '', says the twin 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 encamp for a 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 release a TV documenting what happened. From you having sex with each former, with a cavalry, and giving nascency. Are we clear ? ``

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

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