"I wish Karyn was half mouse and would remain that way for one day before retuning to her normal form."
Karyn let out a high pitched squeak as all her clothes fell off; then started looking around nervously.
Jon smiled as he put the rock away. "You're cute as a mouse." Her body was much the same shape as before; though a third smaller. Her face had grown into a pointed mouse face, and every visible bit of hair and skin had changed into short fur. White on her front, and tan everywhere else. Except that the outer half of her new tail was black.
Karyn rubbed the base of her tail. "Why did you do that?" she said in a squeaky voice.
"This is too dangerous to fool around with. Do you get the point?
Karyn's round mouse ears twitched; then she said ...