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 "Only Fools and Horses" (1981–91), and "EastEnders" (1985-). "Minder" could be quite uncompromising in its use of obscure forms without any clarification. Thus the non-Cockney viewer was obliged to deduce that, say, "iron" was "male homosexual" ('iron'='iron hoof'='poof'). One episode in Series 5 of "Steptoe and Son" was entitled "Any Old Iron", for the same reason, when Albert thinks that Harold is 'on the turn'. In popular music, Spike Jones and his City Slickers recorded "So 'Elp Me", based on rhyming slang, in 1950. The 1967 Kinks song "Harry Rag" was based on the usage of the name Harry Wragg