Cockney Rhyming Slang - Mona Lisa

"Mona Lisa" in this instance should be pronounced in a cockney manner as "moaner leeza", then the rhyming slang has to adjust the generally considered pronunciation of the meaning which is in fact 'pizza', using the less knowledgeable pronunciation of it as "peeza".

So there we have it, not the most common of cockney rhyming slang, but a good excuse to use this picture.