This is so full of shit, you think as you flip through the pages. Every animal under the sun must be in this book. It's at least a thousand pages and weighs at least fifteen pou
nds. Who spent this much time on this book?
Since you have nothing better to do, you decide to open it up to a random page. You close your eyes and drop your finger. Horses, you read, page 421. You flip to it and proceed to read the two pages about horses. Who knew there was so much to learn?
Then you look at the hoofprint. It's made of some kind of deep black ink, which looks very inticing. Curious, you put your hand on it and feel the ink. Suddenly, it seems lime a bolt of electricity surgers through the book to your hand. You yelp in pain and fall on the floor, writhing. Suddenly, the electric feeling stops and you feel very strange...
You try to reach up your hand to scratch your head, but you find that your arm and hand feel quite stiff. You look down and in shock see your fingers on both arms harden and turn black, forming hooves. You try to yelp again, but all that comes out is a deep rumbiling noise from your stomach, which feels very strange. You are whinnying.
You try to get up off the library floor, but fall back down when your feet harden and turn into hooves, your ankles and feet extending, ripping your socks and shoes to a reds. You let out another surprised whinny. You try to jump up and run away, but as you missahppenly clop/run down the stacks of books, you feel your stomach rumble again. You look down and let out a neigh of shock as your feel your stomach begin to swell. It just keeps pushing out and swelling like it's being filled with helium. Your shirt cannot take the pressure and rips an falls behind you as you continue to run.Your stomach widens and barells even more, now about six feet around.
You never realized how far back you were in the library. You try to scream for help, but all that comes out is a loud neigh. You watch in horror as your face feels tremendous pressure and begins to push out into a muzzle. Your teeth feel too big for your mouth and your tounge feels thick and moist. It stretches out further until you there is a blind spot in front of your field of vision. You feels your ears stretch.
As you continue to run, you realize your pants feel very tight. You somehow manage you pull down your zipper and your three foot long horse shlong tumbles out of your pants like a snake. You feel your spine lengthen as your body readies itself for walking on four legs. You fall to the floor again and crawl/walk out of your pants. You look behind you and see your thighs bulge with muscle and begin to swell. Your ass begins to swell, stretching your underwear to the point of them snapping. Finally, your underwear can't take the pressure of your gigantic horse ass and they rip, causing your ass to swell even bigger than it already is. Your thighs are so massive with muscle you're scaring yourself.
Finally, you feel pinpricks all over your body as horse hair begins to grow. You watch in amazememt as a sleek black hide sweeps its way across your body, up your rapidly diminishing shoulder blades, and down your forelegs. You feel pinpricks along your neck and upper back as your luxiorious mane goes in. You feel more pressure in your ass and you look around as a midnight black tail grows from your gigantic ass. Somehow it swells even bigger. You feel yourself rising as your front and back legs grow to a tremendous length. Your neck bulges and swells with muscle to carry your gigantic horse head. Finally, you grow even bigger and wider as your body expands and widens to tremendous lengths.
You stand there in shock in the quiet lull of the library, now easily a 4000 pound jet black draft shire stallion.