You read the words out loud. "A stallion" it reads. You laugh,"it's not wrong you think to yourself." Suddenly something feels off, you can't explain it. Glancing towards the mirror you gasp. Your have a horse head and are covered in brown fur. You strip to find that your entire body has changed. You are muscular, Your feet are now hooves and your legs have changed to resemble the shape of a horses. After seeing your feet you freak out and look at your hands, they are still realitivley normal, ignoring the brown fur. You also realize that your still standing upright despite being part horse. You reach back and feel the back of your head, a black mane has grown. You hand keeps traveling down, discovering a tail. Looking down you discover the final change, a massive horse cock you stare in awe and imagine all the things you could do with it. You start getting hard at just the ideas. You start jerking off your massive horse cock with your muscular hand, it feels amazing. You climax spraying your cum on the floor. You love your new body, time to go put it to good use.