Little Johnny's kindergarten class was on a field trip to their local  police station.  There they saw pictures tacked to a big bulletin board.

The label clearly read, "The 10 Most Wanted."

One of the youngsters pointed to a picture and asked if it really was  the photo of a wanted person.

"Yes," said the policeman, "the detectives want him very badly."

Little Johnny asked, "If they want him so badly, why didn't you keep them when you took their pictures?"