children only after a gap of 20 to 40 years, children's playground and street songs, like much children's lore, are learned and passed on almost immediately. The Opies noted that this had two important effects: the rapid transmission of new and adjusted versions of songs, which could cover a country like Great Britain in perhaps a month by exclusively oral transmission, and the process of "wear and repair", in which songs were changed, modified and fixed as words and phrases were forgotten, misunderstood or updated. Origins of songs Some rhymes collected in the mid-twentieth century can be seen to have origins as early in the eighteenth century. Where sources could be identified, they could often be traced to popular adult songs, including ballads and those in music hall and minstrel shows. They were also studied in 19th century New York. Children also have a tendency to recycle nursery rhymes, children's commercial songs and adult music in satirical versions. A good example is the theme from the mid-1950s Disney film Davy Crockett, King of the Wild Frontier, "The Ballad of Davy Crockett", with a tune by George Bruns; its opening lines, "Born on a mountain top in Tennessee / The greenest state in the land of the free", were endlessly satirised to make Crockett a spaceman, a parricide and even a Teddy Boy. Action songs Some of the most popular playground songs include actions to be done with the words. Among the most famous of these is "I'm a Little Teapot". A term from the song is now commonly used in cricket to describe a disgruntled bowler's stance when a catch has been dropped. A 'teapot' involves standing with one hand on your hip in disappointment, a 'double teapot' involves both hands on hips and a disapproving glare. Game songs Many children's playground and street songs are connected to particular games. These include clapping games, like "Miss Susie', played in America; "A sailor went to sea" from Britain; and "Mpeewa", played in parts of Africa. Many traditional Māori children's games, some of them with educational applications—such as hand movement, stick and string games—were accompanied by particular songs. In the Congo, the traditional game "A Wa Nsabwee" is played by two children synchronising hand and other movements while singing. Skipping games like Double Dutch have been seen as important in the formation of hip hop and rap music. If a playground song