16. In Cockney rhyming slang, what does "brown bread" mean?
From Quiz Baking Bread
Answer:
Dead
According to "The Urban Dictionary," the usage could occur as a threat, for example: "You're brown bread, sunshine," meaning "I'm going to kill you." Or it could also mean just plumb wore out, as in, "I'm brown bread after all that hassle."
The same reference is made in internet slang sites and idiom sites such as "The Free Dictionary" online.
Cockney rhyming slang originated in the early 1800s in London's East End. However, rhyming slang is not limited to England's capital, but is also prevalent in the rest of the United Kingdom, as well as Ireland, Australia, and New Zealand.