My four year old son has this incredibly cute shirt that has 'TROUBLE' written on it.
When we having lunch today, and we were pointing to words around the restaurant. I pointed to his shirt and asked "What does this say?"
"Trouble," he said with a smile. Then he gets that I-need-to-know-everything-in-the-Universe look on his face. "Why does it say trouble?"
"Because you can be trouble sometimes. Are you trouble sometimes?"
"No," he said, still smiling. "That would make sin. I will be good forever."
Now I'm smiling! [T]o such belongs the kingdom of heaven.