Miss M this is Cockney rhyming slang and I am unfamiliar with it but be'er is better. Some examples are Apples and Pears equal stairs and Bloody Mary equlas hairy. Cockney slang was widely used for illegal activities years ago but now has gone mainstream and is considered good fun.
Perhaps Choo will be kind enough to give us a translation in the morn as I believe i have begun breaking his A la mode!