As often happens in this world, despite the best laid plans of all involved and a chronivac, chance intervenes to gum up the works in unexpected ways. As it happens thee was another pony at the center for an early morning makeover. This one was a juvenile killer being made over as a pony boy breeder via court order as punishment for his crime. He was the same size, age, build, and hair color to Tony. Both procedures finished at the same time, and both gurneys were wheeled into the hall. The orderlies showed up a few minutes late, and got distracted talking sports, and everything else under the sun. So distracted they failed to notice that they switched the patients. While the juvenile prisoner was wheeled to recovery, Tony was wheeled directedly to the breeder ward for growth feeding, training, and mental conditioning.
....
Tony was awash in a world of sensation. His cock was being milked, his nipples tortured, he was unconsciously sucking a horse cock that was spewing cum down his throat, and another was fucking him in the ass. His nose was overloaded with a strong pheromonal cocktail pumped into the room to drive the converting breeder ponies crazy with lust.
And then there was the strange voice in his ears, ringing through his head. "Your master commands that you are a breeder. His reward to you is his cock in your ass. You love your master. He has rewarded you with another pony to fuck and a breakfast of cum. Relish it's sweet, salty taste. Fuck the stallion before you. Breed him. Fill him to bursting with your cum so your balls can grow. Fuck hard! Harder! Scream like the stallion you are as you cum! Feel your balls churn and refill even as they empty. Lust is joy! Pony sex is the ultimate pleasure. You will grow big and strong to serve your master. Your master owns every part of you......" The script went on for 20 minutes, then looped again...Infinitely.
Tony's eyes popped open and viewed the screen projected in the VR goggles on his face. It showed him strapped into an elaborate bondage rack. A Clydesdale pony boy above him, whose cock he was sucking. Another pony strapped below him he was fucking. His nipples were chained to the rack and being brutalized by the thrusting in front and behind. Tony was experiencing an overload of pain being over washed with pleasure.
Tony knew this was not part of their plan, but all he could do was ride it out. At first it was unbearable, but as time went on the pleasure built and built. Tony felt his muscles swelling, along with his cock, which felt gigantic and seemed to push a little further with each heartbeat. The taste of the cum grew on Tony who began sucking with relish and was rewarded with multiple large blasts of sweet cum into his mouth and down his throat. His nipples pushed out slightly and toughened as the pain turned to pleasure. Even the massive cock in his ass was giving him pleasure. Tony felt like a true sex beast. He had no rational thought, all he wanted to do was fuck and be fucked. "Thank you master", he caught himself thinking. After the first hour he was totally beyond rational thought and having a blast fucking and being fucked like a beast.
After 3 hours it all suddenly stopped for Tony. Once the tubes were removed from his mouth and ass, the goggles and headphones were removed. Tony came to realize he was in a large room full of pony boys in special stalls hooked up to machines pumping them full of special growth food mixed with strong aphrodisiacs. His cock with inserted into another machine he had been fucking. Tony was amused to see it collected nearly a gallon of his cum. Now he knew why his balls were sore and swollen. Tony was quickly released from the medical rack by 2 orderlies wearing special filter masks. The orderlies escorted Tony into an adjacent room where he was hosed down, and shampooed. His shoes were fitted and his teeth were brushed.
While the orderlies were attempting to fit a ball gag, Dr. Kenworth waked in. "What the hell are you two doing? He's a volunteer! You two have made a big enough mess already. Get out before I bring the family in! Idiots!"