Little Johnny's kindergarten class was on a field trip to
their local police station where they saw pictures, tacked
to a bulletin board, of the 10 most wanted criminals.

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 very badly
to capture him."

Little Johnny asked, "Why didn't you keep him when you took
his picture!"