As you exult in your range, you trot past Michelle, Jamie, Becca and Jenny. You want to look out the window, and get a feel for where you are, where the barn is in relation to everything else. You hung your head out the window, looking at the moon and stars. Suddenly, you sense a presence behind you.
Turning to see what it is, you bray in terror as you see a big jack. You try to turn away, pressing your butt against a wall, but you have no time for such maneuvers. The jack hops up on your back like he had been invited, He ignores your plaintive brays.
Eventually, the jack find his mark, and plows you. Your brays grow incoherent, a mix of fear and confusion and something you can’t yet identify. Your resistance wear down, and you realize what it is: it is lust. That's why you bray again but now with joyness.
That jack is not your only lover of the evening, and the next morning, there is considerably less left of your human intelligence. Behaving like a normal donkey was barely an act. You still think of yourself as pretending , but in truth, only you are being deceived. You started to act as a real ass, and you like that.
Eventually, you become pregnant, and is taken off the rotation of hard labor. Time began to lose meaning for you and your friends, and you give birth and nurse your baby donkey, and then you return to the salt mine, and get pregnant again and give birth and return to the salt mine one more time. Like Michelle, Jamie, Becca and Jenny, your human mind and memories are still with you but you respond to your care like a regular ass now out of habit rather than deception.
Years later, in a break from one of your endless shifts in the salt mines, a worker approach you. He pats your on the head and feeds you with a carrot. The worker is always doing nice things for you, giving you sugar cubes or carrots. You like that, while your tail swings back and forth. You have become a model ass, and never give your masters any trouble again.