"The permanent cure..." said Jon, "... is to become a were-something else."
"How is that the cure?" replied the couch.
"You can only be one were-thing at a time. If you became a werewolf, you'd stop turning into a couch. You'd turn into a wolf instead."
"I don't want to turn into a wolf! That's worse than a couch! I'd start wanting to act like a wolf, and I'd turn into a half-wolf half-human thing, and then a whole wolf, and I'd bite someone! Maybe kill someone!"
"Hold it, hold it," said Jon. "That's an example. What about a were-girl? It's no sillier than a couch. You are a girl... so all it would do is make you be a girl during the full moon, think like a girl, but you are one anyway. You'd stop turning into a couch, and it wouldn't affect you! I wish that someone who was a were-girl would appear, bite Karyn, and disappear."
Suddenly a confused-looking teenage girl appeared out of thin air. Thankfully, Jon didn't recognize her. She tripped and fell, and her face implanted itself directly in the couch. "Ick!" she said as she accidentally bit it. Then she disappeared... and Karyn began transforming. The arms of the couch turned into real arms, the legs into real legs, and there were only two of them. The yellow tassels on the couch--which were blonde hair, since the couch wish couldn't reverse the long blonde hair wish--began changing back to normal hair.
"Karyn experimentally took a step and walked around. "It worked!" she said. "I'm back to normal."
"Watch out," said Jon. "Until the moon goes down you'll be thinking like a girl."
Karyn raised her hand as if to slap Jon.
"Joke, joke," he said.