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"
Rhyming slang to the phrase "Sweeney Todd" for "Flying Squad", a rapid response unit of London’s Metropolitan Police. In "The Fall and Rise of Reginald Perrin" (1976–79), a comic twist was added to rhyming slang by way of spurious and fabricated examples which a young man had laboriously attempted to explain to his father (e.g. 'dustbins' meaning 'children', as in 'dustbin lids'='kids'; 'Teds' being 'Ted Heath' and thus 'teeth'; and even 'Chitty Chitty' being 'Chitty Chitty Bang Bang', and thus 'rhyming slang'...). It was also featured in an episode of "The Good Life" in the first season (1975) where Tom and Barbara