They're jokes designed for kids. Its main feature is in employment of the phrase "so. . . so" in its construction to intensify or exaggerate the mental images it evokes. Another of its attractions is the game with the multiple meanings or sounds of words. 1 . "He was so short, so short that when he died, he went to the roof." 2 . "He was so tall, so tall that he had no sien, he had a thousand."