beloved folk song, not heard much anymore: "Oh, dear, what can  the matter be?/ Dear, dear, what can the matter be?/ Oh, dear, what  can the matter be?/ Johnnys so long at the fair." Its no stretch  to understand who Johnny is in the movie: Its Jean Simmons  characters missing brother, Johnny, and he certainly seems to have  overstayed his welcome at this Paris Worlds Fair.