After Jon grabbed the stone, he held it tightly and said "I wish everyone had a second head." The stone glowed, but nothing seemed to happen.
"Jon?" his mother called from the other side of his door. She did a quick knock, and then walked in. To Jon's relief, his mother had her second head back. "You better hurry," her left head said. "You don't want to be late to school," said the right.
"Okay, Moms," both of Jon's heads said in unison, happily. They grabbed their book bag and left the room and walked downstairs, where they saw their sister Zoe, now also with two heads. "Finally, everything's back to normal," Jon's other head said.
The "Jons" (with the stone) and the "Zoes" then left for school.