A magical ring and those foolish, fated words said, as Eric laid then Susan, she with her eyes wide, mouth agape, her pussy quivering, as all the while she saw Eric changing, but his penis was the first to become as that born to an equine.
"Huh, huh, huh, huh," Eric huffed as he shoved and drove his changing manhood ever deeper, it expanding as it changed.
"Ah-huh, Eric huh, oh please, pull it out of me, you are hurting me..., oh, huh, huh, Eric-huh, huh, oh please slow it and let my vagina ex...pand..., oh Eric!" Susan said as she moaned and huffed, while Eric was changing, becoming for his lover as her newest stallion.
A hard knocking at her bedroom door, "Say there, I hear a lot of strange sounds from inside this bedroom!" Chided a liberal modern-day father to his sexually aloof daughter.
Susan said nothing nor could Eric by then as his whole head had made the species transition, it becoming the head of a yearling old Welsh pony.
As Susan lay on her bed with a boyfriend literally becoming a lusty stallion pony with his cock deeply embedded inside her most sensual place, she wanted Eric to finish with her and with how he was changing. "Er... Eric, when..., when you feel as know how your..., your body is, huh, huh, changing, huh, you can, huh, huh, withdraw from mating the me...!" Susan said, she loving her being bred by a pony size cock, it something she wanted, as would have tried if not for her fear of the stallion trampling on her.
Eric heard what Susan said to him, but his mind was engrossed with his want for having sex with Susan. She was at last his to thrill his cock and he wanted her to moan, as moan bad.
A wildly uncoordinated try at kissing of Susan brought Eric to realize just how much he had, as became of a different physical form. He rose up on his fore-knees, as cocked his equine shaped head to ogle his right eye down at Susan. Feeling felt drastically wrong, as different from how he, Eric had started his sex-play with Sue.
His anxious feelings as Eric tried to gain some understanding of what all had happened, he felt his hairy tail give a swish across his hind hocks. Feeling then as nervous and still not fully aware of his present situation, Eric lifted his pelvis, as felt his mammoth pony size cock slide back but not out of the grip Sue had from hos tight her vagina gripped the monster cock embedded, while leaking semen.
"Eric, Eric, I know not how..., ah..., but after you started your thrusting IN ME, you stated, wished as how much wanting to become for me as my stallion." Sue said, as Eric relaxed, and let his cock sink deep again, making Sue to moan!
"How or why, but I told my dad today we had need of a Welsh pony stallion to use as a breeder stallion. I wanted an all black pony, or just as black a pony stallion as you are now. There is something either providential or sinfully unholy about what has happened to you. You rise and get up, please be careful not to trample your new weighty self upon me your soon owner, trainer, and breeder, who shall lease you as my new stallion at stud."
Eric was silent, not even did he dare to make a whinny.
Slowly, cautiously, Eric rose up, bracing his stance using four legs, hoofs, and as his cock went limp, it slithered out from being deep inside of Sue. As Eric stepped off the bed, he stood on all fours, his tail busily swishing, and his wet cock slowly drying, retreating up, moving inside the new grown sheath.
A slight to low tone snuffle from Eric was all he dared to exclaim.
Sue rose to her being seated at the side of her bed, she messaging her labia, as pony semen drizzled out onto the bedroom floor.
"Damn Eric, I liked our one night stand, you wore me to being sore for a week," Sue said with a seductive sort of smile. "As much as I wanted to try mating with a stallion, I never liked the pictures you can see on the internet, women giving a pony his big thrill fun of mating a woman. You though, as how you were so changed, I do not know, but since you are as I have a business need for a all black pony stallion, would you mind then breeding with real, born pony mares?"