"I'd like to become a badger," you say, since badgers are your favorite animal.
The man touches your forehead and mubles something, which you clearly don't understand. You find yourself shrinking, as your clothes get bigger, and baggier. Next fur grows all over you. Then your feet and hands change to become little black claws. Next your face pushes out, and completes with your ears moving up to your head.
"Thank you sir," you say.
"You welcome, lil one," the man replies back to you.