Looking at the five video files she clicked on the first video.
A window opened and the video began to play.
Various numbers and letters ran across the screen finally displaying the title "Experiment One". As the title faded plunging the screen into darkness a male voice sounded from the speakers on the monitor.
"Experiment One, an investigation of the effects of the strain 2.3b on a male subject"
The voice faded and the screen began to light up.
On the screen Rebecca could see a small holding cell with a man who must have been no more than 20 lying on the floor heavily sedated.
The camera focused on the man motionless on the floor for a few minutes with nothing seeming to be happening until there was the sound of the cell door opening. A man in a long white coat walked in pressed a long needle into the mans arm injecting a weird brownish fluid into him and then proceeded to walk out shutting the cell door behind him.
For the next few minutes nothing else seemed to be happening until the man started to wake up from sedation. The man stood up slightly rubbing his face with his hand and began to survey his surroundings. He then stood up fully and began to walk over to the padded walls nudging them slightly.
"Hello?" He called out.
He stood motionless waiting for a reply in the silence.
Suddenly the man through back his head letting out a large moan. He started to pull his shirt off causing it to land on the floor nearby and he then started to force down his trousers leaving him naked.
The man looked down between his legs at his cock which had became erect. He rubbed his hand through his thick pubic hair and took his cock in his hand starting to give himself a hand job.
As he rubbed Rebecca started to notice that his cock was changing. As the man moaned the head of his cock started to swell becoming larger and thicker and eventually popping out of his foreskin. The man looked down at the larger head which only caused him to pump harder and faster.
His cock now was starting to darken in colour and lengthen growing past his modest original 6 inches up to 7 then 8 then 9, 10. He was getting longer and thicker by the second.
His scrotum was beginning to change too. It was darkening and becoming shiny looking, stretching getting larger as his testes grew within. They started to lower down and swing between his legs growing to the size of lemons.
As Rebecca watched she started to feel her pussy starting to wetten between her legs. She tried hard to resist touching it and looked back at the screen.
The man fell forward onto his knees still moaning in pleasure. His cock was still lengthening, it was up to 12 inches. Thick skin started to develop around the base of his cock causing it to attach to his stomach forming a sheath. Suddenly from his sheath another 3 inches of cock pushed out pushing him up to 15 inches.
The man lay there on his knees pumping his now fully grown donkey cock. This lasted for another minute until he let out a laboured half moan, half bray and shot his load over the ground.
He lay there panting as his cock retreated back into sheath and the video faded out.
The male voice from the start of the video started again.
"That was a demonstration of the effects of strain 2.3b on a male subject. Transformation effected the subjects genatalia causing it to change into equine proportions. The effect was delayed by 2 minutes and 34 seconds and required the usage of injection."
The voice faded out and then back in again.
"Experiment One, an investigation of the effects of the strain 2.3b on a female subject"
The screen lit up showing a similarly aged woman to the man in an identical cell to the one earlier in the video. The woman was sedated and the same man in the white cloak entered the room and injected her with the same weird brownish liquid followed by his swift exit from the cell.
Within a few minutes the woman began to stir and reacted similarly to the man.
"Hello?" she called out, "Can anyone hear me?"
Yet again the woman let out a large moan and began tearing her clothes off. Ripping off her bra revealing her pert breasts and forcing down her underwear revealing her bald wet sex.
The woman sunk to her knees and started to rub her wet sex with her hands, fingers rubbing over her labia and pushing into her wet slit. Thick hair was starting to develop around her sex as she rubbed herself. As she rubbed her labia started to change stretching and thickening and adopting a tear drop shape suitable for a jenny. Her moans became louder as she rubbed her changed lips as her clit started to shrink done inside her sex.
This scene continued for a few minutes until something else began to happen.
The womans clit was beginning to surge outwards causing it to pop out proudly between the womans lips. Noticing this the woman began to rub her clit frantically. Her clit began to surge further out causing her lips to push apart as her clit lengthened and thickened. Within less than a minute her clit was 2 inches long and protruding out of her sex. She continued to rub it as it grew further eventually reaching 5 inches. By this point the woman was no longer rubbing her clit gently but rubbing it up and down as if giving a hand job as her clit was slowly changing into a cock.
Rebecca looked on at this site with both amazement at this sight before her possibly happening and with fear that it may soon happen to her.
By the time the womans cock had reached 8 inches she had began to notice what was happening and she looked down at her new cock protruding from her body but instead of being disgusted like she knew she should be she continued to rub it but faster and harder than before.
Suddenly a bulge appeared below her cock as her ovaries started to push out into testes. The skin around her ovaries tightened and started to drop down turning into a scrotum. This only caused the woman to moan more as her testes enlarged to the size of tennis balls and began to produce cum.
The skin around the base of her cock thickened and attached to her stomach forming a sheath. Her cock then suddenly surged out pushing it from the 10 inches it had already grew to up to 14 inches. The sheer size of her cock had pushed up past her breasts. The woman lifted the cock and placed it between her breasts pushing them together forcing the cock between them. She began to rub her breasts up and down causing them to stimulate the equine head of her cock.
Within 20 seconds her balls started to churn and the first string of cum started to shoot out of her cock. She released the grasp of her breasts around her cock allowing it to shoot its load around her. The woman lay on the ground covered in sweat and her own cum and the video faded out.
The male voice started again.
"That was a demonstration of the effects of strain 2.3b on a female subject. The transformation effect on the subjects genatalia first caused a change into that of a female equine but eventually became that of its male counterpart. The effect was delayed by 4 minutes and 46 seconds and required the usage of injection"
The voice then continued..
"The strain should therefore be enhanced to work quicker and more effectively as well as the ultimate goal of the creation of an airborn strain. The work to be done on the reversal syrum continues and it is currently operating at a 85% success rate at working and a 65% success rate at reversing all changes"
The video clip ended.