piffy on a rock bun

== English == === Etymology === Age and etymology are uncertain; it existed in the 1930s and possibly derives from a music hall catchphrase. Some commentators (e.g. World Wide Words) suggest that piffy may have originally been patience, and the rock bun was simply a type of cake. === Pronunciation === === Noun === piffy on a rock bun (uncountable) (slang, UK, idiomatic) A person ignored or sidelined from an activity ==== Usage notes ==== Common in North-West England, sometimes shortened to just like piffy. It is the Northern equivalent of the Southern like a lemon.