You experience a painful burning sensation in your crotch and you gasp in horror as you see your manhood and balls pull inside you and leave nothing but a moist slit. You then scream in pain as the burning sensation shifts from your now womanized crotch to your pelvis which then begins to expand to a much wider size leaving you with a woman's shapely (but in your case, abnormally wide) hips.
Once again the burning sensation shifts to a different part of your body but this time the pain is no where near as intense as the sensation moves to your chest. With dawning horror you realize what is about to happen. But to your surprise (and relief) you don't grow large breasts like you expected. Instead your manly chest completely vanishes, and with a gasp of surprise you realize that even you nipples are gone! Then once again you feel the burning sensation shift, this time it moves to just below you belly button.
Then the worst thing of all happens. You stare at the transforming area with a bordering sense of panic. Because before your eyes you see four large bumps appear. The bumps quickly enlarge until they are about 3 inches long then stop. But the horror is not over yet as the skin beneath the four strange protrusions suddenly starts to swell. And with even greater horror you realize that you are growing a cow's udder and if it wasn't for the fact that your arms were shackled to the wall you would have touched it just to see if it was real! But you can easily tell that the udder is now yours as your nerves send your brain the strange sensation of your new udder as the skin around it changes to a lighter shade of pink and you feel it continue to swell with milk and fat to what was rapidly becoming a very ridiculous size. By the time it stopped growing it reached all the way past your feet and took up all the space on the floor between your widely spread legs. In-fact if you hadn't already been sitting on the floor you doubt if you would have been able to remain standing. As it is, you doubt that you will ever be able to stand up again.
Thats when you notice that the burning sensation has almost completely faded away. It's now just a faint tingling sensation throughout your body. Just as your beginning to recover from your shock and getting use to the strange sensation of having gallons of milk sloshing around inside your jiggling udder, Bessie the Cowotaur comes back into the room. Bessie takes one look at you gargantuan udder and starts laughing.
"Ha ha ha! Looks like I used wwwaaaaayyy too much milk production hormone." Bessie manages to say between her fits of giggles. After 5 minutes she manages to stop laughing. She then unlocks your shackles and easily lifts you up into the air despite the enormous weight of your newly acquired udder.
Bessie then begins to carefully examine every part of your body. She began to check everything from the weight of your udder (which made her smile with glee) to strange things like measuring the depth of your new pussy while ignoring your shouts of outrage (and small moans of pleasure) from having a measuring stick shoved into such a sensitive location. Bessie then gave her diagnosis which gave you another shock.
"The transformation is proceeding as expected, and over the next few weeks your feet should turn into hooves, you'll grow a light coating of cow hair all over your body and you will grow small little horns." Bessie says casually.
"You mean I'm going to become even more of a freak?!" You exclaim in surprised horror.
"If you think your a freak now, just wait until you get artificially inseminated." Bessie says evilly, sending a chill down your spine. Bessie then carries you into a near by room. And you see that it's a bedroom. She then gently lays you down on the bed with your massive udder once again spread out between your legs and slightly hanging over the end of the bed.
"With that huge udder of yours, I see no reason to have you shackled again. You obviously can't go anywhere anyway." Bessie says as she leaves you on the bed and walks over to a strange machine thats connected to several huge empty tanks on the other side of the room. Bessie then moves the machine to the end of the bed where your udder hangs off. "Time for you to be hooked up to the milking machine." Bessie says to your horror as she begins to approach you with four nozzles that connect to the machine.