Control

When I woke up the next morning, I decided to leave the rock at home; it was too dangerous to take to school. However, I still wanted to have fun during the day. Holding the rock in my hand, I said, "I wish whenever I say a person's name, then command him or her to do something, that person will have to do it." *That should do it,* I thought to myself as I put the rock in a secret hiding place. *Now, who should I test it on first?*