use one's loaf

use one's loaf (third-person singular simple present uses one's loaf, present participle using one's loaf, simple past and past participle used one's loaf)

1. (Cockney rhyming slang) To think.

• Usually in the second-person imperative form "use your loaf".

• “use your loaf” (UK) in Macmillan English Dictionary.
• “use your loaf”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.