That takes the biscuit !
A cliché may sometimes be used in a work of fiction for comedic effect. A spoken or written cliché is often a vivid depiction of an abstract matter that works by means of analogy or exaggeration. The picture used is usually drawn from everyday experience so that the recipient most probably can relate to the depiction by tentatively querying their reaction to what is conveyed in the picture. ~ Wikipedia
"That takes the biscuit"! I think this saying is more generally used in the UK, meaning: "The most surprising thing that could have occurred", or "something taken to the limit"
HCS ♥ Sorry not a new shot, I am still poorly in bed with this bloomin unshakeable virus! But cliche saying and very cliche bokeh :)