MILTON, MASS. (AP) - Ever since the invention of metal signs, mail boxes and other outside metallic objects, boys have been intrigued by what would happen if you stuck your tongue on the cold metal. Paul Daly Jr., 11, found out during a recent cold spell. His tongue came in contact with a road sign post while he and Jerry Sheehan, 7, were meandering to the store. How it happened, neither Paul nor Jerry tattled. But, with Paul gesturing wildly and uttering strange sounds, Jerry ran for help. Firemen and policemen hustled to the scene and hot compresses were applied to free Paul's tongue. Paul's mother, commented after the crisis: "I don't know what made him do it. But I'm sure he won't do it again."