Jason was born being strong of body and wanting to show his willingness to please anyone who was pleasing to him. He had dared a known witch to prove she was his better, as she did. Maybe it was foolhardy what he did, though he knew the woman had powers and knew ways of channeling fellows and friends, they becoming perverse before then willing to do for her what she had a need. It was of his wanting to enjoy similar to her needs, his male delights, and from what it was to be one of her lovers, he knew how she could enhance a male human.
Being then her stud-pet donkey was an experience he thought might be equal to what his friends did for her, but what he failed to consider was his becoming a farm animal, she might make use of him to mate real-born animals. His changed mind felt battered by infused new instincts and learned knowledge a human gains from schooling. He was not a good student when in school, he tending to learn how to rap and do what his brothers did, doing things to prove their masculinity in public. He was capable after being changed of showing all his enhanced masculinity in public, and why not, as what people saw of him was not a black brother, but a gray fur, black hide, big cock male donkey!
Jason had not long to wait before Mrs. Smyth placed a halter about his head and clipping a tethered rein to it and him, she walked her new stud around behind her house, to the entrance to a root cellar, there she had a room prepared for her to lie down and such a large male fellow to stand and show her a fun time.
Witchery and fun blended to pull Jason away from his learned moral thinking ways to acting as do beasts feeling the call of rut. Even as Jason stood acting out what Mrs. Smyth explained to him he should work his heightened libido, his length entering the woman went inside her but a few inches. She explained how she wished Jason to taunt her, but when he would meet and go to mating a mare or female equines he could utilize his fuller length into them and their hot tunnel. He gained what he had before then tried, but becoming an animal of statue, had him relish for the day when he should be put to doing stud breeding. He lived onward for that day, eating, sleeping, and doing what for a male donkey seemed as his nature, part of it being his toying with and impressions of using his length to delve deep, thrusting, and feeling ever so masculine.
That was the before weeks and months when Mrs. Smyth made her use of a donkified fellow, her magic fogging the mind of Jason to where he lost all track of time, dates, and thought only of his libido and endurance.
Unrealized by Jason, but his daytime pleasuring he did toying with his donkey cock was to any passing past person as a form of suggesting what animals have for joy, and tantalizing humans to wish they had something similar. As months passed into a year and years more, Mrs. Smyth gave to Jason several new companions, some male and two females, the females he held close as if they were his property, and not the property of a sexy witch.