For the rest of the second semester Hannah was winning all of the team races. In fact owners from other schools would bring their teams to race against Hannah and her pony team. As a reward she would let the two ponies kiss and caress each other every night and promised that Cody would be allowed to fuck his sister at the end of the semester if they continued winning.
Just avoiding Hannah's cane was incentive enough for Cody to win but being allowed to fuck and cum was the biggest incentive he ever had. It was during this time that Cody also felt his feeling for Candy becoming stronger. He found himself falling in love with Candy and there was no doubt in anyone's mind Candy loved Cody and claimed him for her own.
On several occasions while the ponies were relaxing in the corral Candy would push away other ponygirls who got close to Cody. In fact she and Michelle had gotten into several jealous ponygirl fights over Cody. Eventually the other ponygirls including Michelle accepted that Cody and Candy were mated. Candy had become the alpha pony of the school and claimed her brother for her own.
On several occasions Candy caught Michelle staring at Cody so Candy would make it a point to trip Michelle or slam into her to remind Michelle, who had Cody as a mate.
Then one morning after their morning enema and meal, Hannah put Candy back in their cage but this time with her wrists locked behind her bar, while Cody was left bent over in the enema stocks. Hannah also spread his legs wide apart and secured then with chains in the floor so he would have to remain that way.
As the entire pony class assembled, their professor spoke, "Today we get to watch a ponygirl get artificially inseminated from a ponyboy."
At the moment the pony Doctor pushed out a stainless steel table with Michelle strapped to it on her back. Michelle's legs were strapped into a pair of stirrups, which kept her legs upwards as well as forced wide apart. The doctor pushed the medical table next to the enema bench and began to explain the procedure to the class.
As the doctor spoke Cody looked lovingly towards his sister and tried to imagine how it will fell to actually fuck her. Just then he felt the doctor push two fingers into his ass and began rubbing his prostate.
"This will extract Cody's semen" the doctor explained, "but will not give him any sexual satisfaction and may very well leave him even more frustrated."
He turned his head to see Michelle on the table looking at him. Candy also saw her looking at Cody. Candy slammed her body against the steel bars of their cage to let Michelle know that she had better stop looking at him. Michelle took the hint and turned her face away.
The doctor rubbed his prostate faster and he could feel the need to piss building in his crotch. The sensation continued growing until he could no longer hold it in and his body began to involuntarily piss. However in reality it was his sperm being forced out of him.
It had been so long since Cody had masturbated and actually came that he could no longer remember the sensation of cumming. He knew it was more pleasurable than this but he couldn't remember.
He glanced over at his insanely gorgeous half sister and hoped he would get a chance to fuck her so he could remember what it felt like to cum again. He also wished that Hannah had let him out of chastity.
It had been months since the teenager felt an erection and just wanted to get hard again. In fact he was certain that his time in chastity would be more bearable if he could just get hard once in a while. Unfortunately his owner believed that the best way to keep a ponyboy motivated was to keep him desperate and frustrated.
The doctor filled a large syringe with Cody's sperm. Once she was certain she had most of it she took the syringe over to Michelle and inserted into her pussy. Michelle gasped loudly when the chilled syringe was pushed deep into her and could feel Cody's warm sperm being shot into her.
Once she was finished the doctor raised the stirrups holding Michelle's legs. "We want to make certain none of the sperm drips out," the doctor explained, "So we will keep Michelle like this for the reminder of the day to ensure that she is impregnated."
After the doctor was finished, the professor explained," Since Michelle was impregnated by another pony, their off spring will be raised in a foster home and will automatically become a pony as soon as he or she becomes eighteen."
A couple of other students raised their hands to ask if they can have their ponygirls impregnated by Cody. Hannah was a very proud owner since she had one of the very few ponyboys and said she was willing to discuss terms for her ponyboy's sperm.
After class Hannah hooked up her team to her cart and rode them hard on the track for the rest of the day.
A few weeks later Hannah came into the pony barn dressed in a new outfit. New black polished boots that hugged her slender legs upto her knees, black latex short shorts that perfectly accented her petite ass. And a black latex vest that showed off her flat chest.
Hannah took her ponies out of their cell and got them ready for the day. She made sure both ponies were emptied out completely. However on this day Hannah made sure their enemas were finished before she fed them. Normally she would feed them at the same time they were getting their enemas so this was an extremely kind treat from their owner.
