"I wish for the next 7 days that, the roles of my family and at least one random person each of us know would switch with the first person that they would speak with, along with any other random personality or physical necessary to accommodate the swap." The randomness would keep it exciting. He'd never know what to expect.
The stone flashed so Jon knew the wish had been granted. In the excitement of making the wish Jon forgot to exclude himself from the wish. So the first person that he met he'd also exchange roles with.
