Jon got up and got a soda from the kitchen, momentarily pausing to hear his mom rooting for the local sports team she was watching on the TV. It was so amazing how things were progressing so far. His mom really was acting more and more like his dad, and vice versa, and they didn't even notice that anything was out of the ordinary. He opened his soda can and took a sip, and that was when an idea came to him. Why not make things a little more interesting?
Taking the stone from his pocket, he said "I wish that, over the next week, my brother and sister would gradually swap memories and personality traits, and by the seventh day they will completely believe that they are and have always been the opposite person despite their outward appearance. Also, I wish that whatever clothes they decide to wear will fit their bodies. And I wish that, one week after that, they will return to normal and not remember that any change had occurred." The stone flashed, granting his wishes.
