You tell Mike that you went to a wish vending machine to wish what you really wanted. Mike, who can believe his little brother wanted a donkey tail, tells him "I think I will let you be." Mike walks out of the room and closed the door.
However, after Mike touched your Tail, it started to grow more and grew all the way down your leg to your ankle. You now have a donkey tail longer than anyone has ever seen. You are curious in how it could grow that much in a short time. You are also very embarrassed about the incident that had happen, that you decide that you are not going out anymore and go to sleep.
As you sleep, new changes seem to have happen. As you slept, your feet turned into hooves, making you grow taller than you were. Your internal organs change also to more donkey like, where your butt puckered up and is now a donkey ass that you tail covers up. The other change is that your muzzle comes in a small bit. Your face is half extended, your front teeth become bucked donkey teeth, and you tongue also expanded a bit. As soon as you wake up the next day, you do not realize the changes until you try to stand up. You almost fall over, but land on the bed as you fall back. As you look down, you see that your feet are no longer feet, but hooves. You try to stand up again, but this time fall on the floor face first. As soon as you hit the floor, you realize that your nose is farther away than it was previously and couldn't see starlight down like you wanted to. It takes you a while to learn how to walk, but you manage to do so as you feel like you are stepping on tippy toes. You walk to the bathroom to see what other changes happen at night. As soon as you hit the full length mirror in the bathroom, you almost scream in fear in the changes that has happen. As you turn around, you see that your butt got puckered and is now hiding behind your tail. You realized that this is more than what I wished for and are afraid to have anyone see you. However the changes you weren't expecting are still yet to come.