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,
Fruit (slang) with the words essentially backwards; cool (look), delo (old) and nammow (woman). Out of the East End of London traditional Cockney rhyming slang developed, which works by taking two words that are related through a short phrase and using the first word to stand for a word that rhymes with the second. For instance, the most popular of these rhyming slang phrases used throughout Britain is probably "telling porkies" meaning "lies" as "pork pies" rhymes with lies. "Alright, me old fruit?" is an example of this as "fruit gum" is translated as meaning "chum" (a friend or acquaintance). "Cassell's Dictionary