Matt woke in the barn stall the next morning.
The smell of his own droppings and piss barged into his awareness almost immediately, overwhelming the poor guy who had quite forgotten that he had swapped bodies with a donkey. After a moment or so of pure panic, memories of his Chronivac-assisted swap with an ordinary jack donkey came rushing back.
He had fallen asleep standing, which was a novel experience in itself. He didn't remember falling asleep. He just recalled being awake, trying to plan how to get back into his human form, and then in the next instant he had fallen into a deep sleep. Now, keen to get the day started, he announced his enthusiasm with some eager brays.
"Raring to go, jack?" The farmhand appeared outside the gate of the stall.
Refreshed from his sleep, Matt looked closely at the hand. The beefy young man was probably about his own age. He wore denim jeans and a dusty white sleeveless undershirt. As a gay man, Matt would have been happy to have stared at the farmhand's amazing biceps for hours. Giving some lusty looks at the virile young farm worker combined with Matt's tendency to wake with morning wood, which seemed to translate from his human to equine form.
He had the erection. Now he just needed the damn jenny. The hand opened the gate and let the spirited jack emerge into the barn. He had other chores, so he didn't immediately concern himself with Matt, which gave the donkey time to focus on the objective of the day. He didn't even need to focus for very long. He spied the jenny, or perhaps another one, standing in the barnyard just outside the big structure.
With his black hose of a cock stretched fully along his abdomen, he trotted out of the barn to introduce himself again, hoping for better results than his previous attempts.
Fortunately, she seemed less aloof. Almost giddy with his good luck, Matt managed to mount her quickly, but his efforts only alerted Chronivac to the possibility that his experience was falling short of expectations. Another jack in a nearby pasture at that very instant felt compelled and suddenly broke into a galloping run and arrived on the scene to the admiration of the jenny and the disconcertion of Matt.
The jenny immediately proved fickle. Seeing the new arrival gave her a comparison, which evidently didn't work in Matt's favor. His awkward mount ended with him falling heavily on his front hooves after he slid off the jenny once she moved away from him and toward the new jack.
The Chronivac had arranged for the other jack to arrived locked and loaded. With an even bigger black hose of a cock and large, churning balls, the jack pushed Matt aside and confidently took Matt's previous place atop the female.
"Back off, buddy," Matt brayed. He needed the jenny more than the other jack. He needed to get off in her so he could get back into his human body.
But Matt's show of defiance didn't end well. If he had been more attuned to the clues, he would probably not have challenged the alpha jack on the farm. He quickly learned that those ugly, block teeth also make effective offensive weapons as the challenged jack landed bites on Matt's neck and front legs.
"Ouch! Stop!" Matt brayed, but the sound of his braying only seemed to antagonize the jack more as the impatient jenny waited for her new suitor to drive off the disappointing interloper.
The jack used a nasty little twist of those blocky teeth to inflict a lot of pain on Matt, who had always been averse to any physical discomfort. Any spirit of defiance soon seeped out of his thoughts as his previously raging erection also disappeared back into his furry sheath.
As he limped away from the barnyard arena, he saw the victorious jack mount the jenny and begin to thrust wildly into her. Distracted by the almost baffling turn of events, Matt was unprepared when the hand reappeared and took his bridle. "Come on, jack. Did you forget there's plowing to do?"
"No!" Matt brayed, but the farm hand's big biceps swelled as he tugged and pulled the stubborn jack toward the waiting plow.
"EerHaw! Eerhaw!" Matt tried in vain to protest.
The hand had just finished harnessing Matt to the plow when they both heard the ecstatic braying in unison of the triumphant jack and the sated jenny as their union had culminated in a powerful orgasm for both of Matt's fellow beasts.