"Oh there sir, for reasons of the future, what is your name?" The witch asked, as he who stood there in the hut doorway eying his hands, you spoke and announced, "Peter, Peter Anderson!"
"Peter, a good name, as easy to remember and quite appropriate, considering your use as my pet!" The witch said, as you stare with a look of wonderment. "My name is not for you to know, but when addressing me, you shall speak of me as Dear Mistress." She said, as you still needing to go take a piss, blurted out a question, "Mistress, Dear, what sort of pet am I to be for you?"
As with some suddenness of her purpose for her new pet, your changing hands growing then fur, as it is sprouting around your wrists, and upward along your arms. You witness how the witch offers a seductive smirk, and winks her right eye at you. You were about to make an unfriendly remark, as then your pants belt buckle snaps, the buckle flies out the hut door. Your snug fitted belt holding up those expensive trousers then lets go its grip, allowing the slacks to fall, they lying in a heep about your furred ankles.
"Hey there," you yell, as the witch offers a remark and says to you, "All in good time!"
The wild tickling sensation of fur sprouting out from your skin is enough to aid with the already occurring arousal happening to your male member. Your dire need to urinate is demeaned as your full attention is taken while watching your body becoming covered by a pelt of black fur. You cock your head to view directly down at a human penis reconfigured, as lost was your circumcision to a blunt end, what as the arousal engulfed it, the end of your penis bloomed into a morbid inverted trumpet bell shape. Your then animalistic penis became a beastly looking cock, forcing you to ask the witch, "What sort of pet am I?"
Even before the witch would speak and offer to tell you what your bodily form shall become, your feet are struck by a drastic changing. What were heels to your feet rise up to become as hind leg hocks. Your knee and hips crouch as human toes turned black already do merge to form a single toe hoof on each hind foot. The radical reconfiguring of your feet, legs, and stance, tend to work to add a forced urge to your aroused beastly looking cock. You yelp a weird sounding cry as from your wildly tented underwear jerks out that misshapen cock to begin spurting streams of ejaculating semen.
The witch is there as she was prepared, she holding a clay jar to catch and capture the bulk of what you ejaculated.
"Excellent, superior, you shall work well as my pet and an occasional mate!" The witch says, as you hearing the word "Mate," you near to exploding said to her, "Me, like what you have made of me, me as your mate! Mating, having sex with an old cunt like you have, I would rather mate with a mare!"
"In due course, I think you shall learn to prefer mating with mares, with donkey jennets, with me, and with those who I would wish as damned, be they female or male. You are to become for me as an anthropic Shetland pony, a stallion as well!
Think of it, you as a well hung, big balls stallion with a quite insatiable passion for want for breeding with females. Your soon sense for lusting to mate will be for you as much your lifestyle as is breathing or needing to drink water. Even as we speak of it, you have grown a nice black sheath to protect your satin sensual cock. Did you note that you sprouted your tail, and such a full haired tail it is, as shall cover your black donut puckered anus. Indeed, you are becoming for me the essence of what I when much younger than I am now, did do to my suitors, making them as lusty studs. Stud what like you, you shall mature during the coming years, until you be then all pony, a rowdy stallion, what I shall loan and lease to pony farms as a stallion at stud!"
"Me, me a pony stallion, I...," you began to say as if to deny what you saw happening.
"Oh there Peter, you about to ask, as you becoming a pony stallion. You shall, but not before you come to me and we either lie together doing it Missionary style, or you mount me, humping me, as were I a mare. Like I said, lust and the urge of feeling your big cock buried sheath deep inside a hot cunt, whether a mare or mine, the need for sex is your newest and greatest desire!"
Horrified at what has happened to your body, and from hearing the witch speak of your ultimate doom, you again feel the need to urinate, and walking, stride out the hut doorway, walking with urgent intent to go piss like a racehorse.