Jason stood and took on him what came his way, maybe he was foolhardy, or wished as well for Mrs. Smyth to beguile him as she had of Jay and Cody. Witchery and magic deal easily with the details of transformation what science stumbles over and the chosen volunteer usually dies from some horrible malty.
Indeed, the sweeping wave of change crept over Jason from head down and feet up, his genitals changing first as then his head and about the same time his toes became as hind hoofs.
Feeling a gut nauseated feeling, Jason moaned as his internal organs rearranged, some gaining in size, as in his groin grew a sheath, and from the end of his spine sprouted a growing tail.
Just two minutes into his changing of form and species, Jason stood trying to stand upright balancing on hoofs as feet grew longer, and heels became as hind hocks. He felt aroused from how his testicles churned, and from his leathery sheath then protruded the blunt head of his donkified male member. He had to cock his head to one side to eye the rising feeling of his changed penis, the length and girth of it adding to the weightiness, caused him to swoon from his new sensual satisfaction. His erection strained to stand skyward at a forty-five degree angle, the stiffer it got the more the blunt head became shaped like the bell end to a trumpet.
Black was his skin changed into donkey hide and covered then with thick donkey fur, as Mrs. Smyth stepped close to Jason and she began stroking her hands along the length of his mighty equine donkey male shaft.
Jason stood there liking her touches, his cock beginning to dribble out clear pre, as he became nervous. His much bigger donkey balls churned with lust as did his donkey cock spit small shots of white semen. Mrs. Smyth talked to Jason, she coaxing him onward toward his giving her a handful of his ejaculated wealth of semen for her to enjoy as nice hand cream.
When the ejaculating came, Jason came with three massive spews of semen, he admired his libido, the pressured spewing, the smell of his spunk, and it changed to look like yellow-white colored tapioca pudding.
"There now, excellent, your ejaculation has spent your human semen and the changed testicles are hard at work producing donkey semen only!
Sexual functioning surges transforming, and as you spent your load your arms and hands became the new forelegs of my new pet donkey. You are prepared enough to fall and stand properly on all fours, as your tail grows its hairy switch, Jason is as permanently a donkey, a Jack stud, and worthy of being leased to farms as a stud!" Mrs. Smyth said, and Jason had little to do and nothing could he remark of if he liked what she did to him.