Answer Wanted

One day a bus load of kids went for a field trip to the police station.

One of the kids went into the Chief's office and saw a picture of a man
with a wanted sign under it.

The kid asked the Chief, "What does 'wanted' mean?"

"It means," answered the Chief, "that we want to find him so we can put
him in jail."

"Well," the kid asked, "why didn't you just put him in jail when you
took his picture?"