Costermonger a secret language, a code which only other costermongers understood. In her book, "Shadows of the Workhouse", Jennifer Worth observed that "Costers... spoke to each other almost entirely in back slang; incomprensible to an outsider." Many costermongers also used "rhyming slang"; where any word can be substituted with another word that rhymes with it. Examples of rhyming slang include: "tin lids" or "dustpan lids" for "kids"; "jimmy grant" for "emigrant"; "apple and pears" for "stairs"; "rubbidy dub" for "pub" and "trouble and strife" for "wife". The selection of rhyming words often suggested a symbolic association. For example, a "sorrowful tale"
British slang many, they almost become mainstream. While some slang words and phrases are used throughout Britain (e.g. "knackered", meaning "exhausted"), others are restricted to smaller regions, even to small geographical areas. The nations of the United Kingdom, which are England, Scotland, Wales and Northern Ireland, all have their own slang words, as does London. London slang has many varieties, the best known of which is rhyming slang. English-speaking nations of the former British Empire may also use this slang to a certain extent, but also incorporate their own slang words to reflect their different cultures. Not only is the slang used