"Okay, I'll be nice by not changing you into an animal. For your transformation, you will slowly and pleasurably turn into a male version of yourself. After you have your first male orgasm, you will be able to control the change, being able to go back and forth between genders. If you ever have sex, you and your partner will switch every time you both orgasm. Every time you and your partner consecutively change, your pleasure will double. And don't worry, you will both be able to control the size of each others assets, such as breasts, nipples, balls, penises, as you change."
"Ooh, that sounds really....oooohhh.... interesting......"
Susan could feel the tingling begin, and she immediately began to strip. That didn't take long, because she wasn't wearing anything underneath her clothes.
Susan couldn't help but lower her hands down to her vagina and feel it change. She could feel her clit slowly getting bigger around and in length. She raised one of her hands to feel her breasts. They had already shrunk a full cup size, now only a B cup, but her nipples remained hard. Her clit was already an inch and a half long and as big around as a quarter.
Continuing to moan and scream in ecstasy, Susans voice became a little deeper.
Jennifer watched as Susans legs, arms, and even chest began to grow hair. Her thighs became more manly, and grew longer. Her feet, no longer soft and small, also had hair on the toes. Her shoulders widened, as her breasts continued to shrink. They were now barely even considered an A cup. Jennifer noticed a small bump on Susans neck.
"That must be her Adams Apple!" Jennifer thought, finally noticing Susans moans had become more manly.
Finally, Susans breasts had completely receded into her body, and all that was left were manly pecs. Susan, now noticing the lack of pleasure coming from her nipples, lowered her hands down to her now penis-like clit.
Immediately after she began fingering herself with her other hand, the remains of her vagina completely closed up, and began to swell outward. Her clit was now five inches long, and hard as a rock. A sheath had grown about half way up it. The tip of her clit opened up just as the sheath finished growing. Susan kept pumping it up and down as fast as he could, but nothing would come out. He felt down below, and noticed that his balls were now about half the size of a golf ball. Just then, he felt them drop. He orgasmed, letting loose a massive amount of cum, and he then fell to the floor exhausted.