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"
Prickly pears in Australia days it was used as a clothing dye. There is a monument to the "Cactoblastis cactorum" in Dalby, Queensland commemorating the eradication of the prickly pear in the region. The Cactoblastis Memorial Hall in Boonarga, Queensland, also commemorating the eradication. The following "Opuntia" species are recorded as naturalised in Australia: Prickly pears in Australia Prickly pears (Genus "Opuntia") are an invasive plant species in Australia. Prickly pears (mostly "Opuntia stricta") were imported into Australia in the 19th century for use as a natural agricultural fence and in an attempt to establish a cochineal dye industry. Many of these, especially the