"How about a female" you say.
"Ok" says Joy "Wait right here". She then leaves the room.
As you wait you notice a strange smell in the room.
Your body begins to change. You can feel it start with fur sprouting and streaking along it as it reaches your body and continues to spread along your body.
As the fur reaches your legs, your knees reverse and your feet become digitgrade paws, with claws turning into nails and huge muscles sprouting all over your legs. Your feet burst from your socks and shoes, shattering fabric. The fur continues to spread along your chest and back, and muscles sprout up there as well as you grow larger and larger.
Stopping shy at your neck, the fur shoots down through your arms, adding muscles and claws like they did with the feet. Your fingers lose a little bit of their articulation, but not much as the pads on your hands and feet grow in. Your shirt is torn to shreds by your rapid growth.
Finally, the fur reaches your head. You somewhat belatedly realize that you haven't been too worried about all this as you begin to grow fangs and a muzzle. Your ears begin moving up along your head as you blink your new feline eyes. Your mind begins to feel a sense of overwhelming power as you look down at your new 9 foot extremely strong half-tiger body.
"No" you say "I wanted to see one not become one"
The changes then start again forcing you to all fours as your spine straightens out and your fingers seem to mold together. A lot of the previous muscle structure disappears into your body again, making your tiger body much slimmer, your limbs now configured for quadrupedal walking. Try as you might, you fail to stand on two legs for long. Suddenly you see your feline member sliding backwards, followed by the sheath that moves closer to your anus. Finally, what was first your sheath now folds into a small hole right beneath the other one and you let out a high-pitched roar at these strange sensations.
You try to become a male human again and are able to become human but not male.
"I wanted to see one not become one" you say again.