Jonah was mad

Jonah was mad today and he stomped into his room, slammed the door. I walked by his room to go to the restroom, and there was a note by his door that said, " I'm not coming out at all." Jonah. It was written in his best handwriting. I responded, " Sorry! I love you! See you tomorrow??" I was thinking sweet one kid down 3 to go. How can I make the other kids mad enough to go to their room and not want to come out until tomorrow??