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"
Cockney School rhyming "thorns/fawns" in "Sleep and Poetry" and other rhymes which suggested a working class speech. Hunt and Hazlitt were similarly vilified for their diction, but the criticisms were more ideological with them than with Keats. John Wilson Croker perpetuated the term "Cockney School" beyond the pages of "Blackwood's" in 1818 when he attacked Keats's "Endymion" in the "Quarterly Review." The term, and the campaign against Hunt and the others, was not a question of aesthetics. It was, instead, an attack on the class background of the authors and their aspirations to the highest level of the literati, and it was,