Rhyming slang and toad" (the main road) and "apples and pears (stairs), as well as many more obscure examples, e.g. "Battle of the Nile" (a tile, a vulgar term for a hat), "Duke of York" (take a walk), and "Top of Rom" (home). It remains a matter of speculation whether rhyming slang was a linguistic accident, a game, or a cryptolect developed intentionally to confuse non-locals. If deliberate, it may also have been used to maintain a sense of community, or to allow traders to talk amongst themselves in marketplaces in order to facilitate collusion, without customers knowing what they were saying,
Anti-language describe the lingua franca of an anti-society. In his essay "Anti-Language", Halliday synthesized the research of Thomas Harman, Adam Podgórecki, and Bhaktiprasad Mallik to explore anti-languages and the connection between verbal communication and the maintenance of social structure. For this reason, the study of anti-languages is both a study of sociology and linguistics. Halliday's findings can be compiled as a list of nine criteria that a language must meet to be considered an anti-language: Examples of anti-languages include cockney rhyming slang, CB slang, the "grypsera" of Polish prisons, thieves' cant, Polari, and possibly Palawa kani and Bangime. Ulti is a