Jon decided that there was only one way to fix this, make another wish.
So, before Karyn could stop him he said, "I wish that the penis Karyn grew was in a jar as part of a lab experiment in tissue growth when she goes to college." There was a flash from the stone and then Jon and Karyn had to look away from her lap. When they looked back the bulge was gone.
Jon then looked back at Karyn with a smug look and Said, "See I fixed it, so there is no reason for you to be upset."
Karyn looked at Jon and grabbed the stone from his hand and made a quick wish. "I wish