Idiom of the day :- Scream blue murder

Usage, examples and definition of the Idiom :-

The way Johnny complains when he’s about to be bathed might make the neighbors think he’s being murdered. That’s not true. He’s complaining by making a lot of noise, and that’s what this expression means. ‘What am I to do ? Just the sight of water and Johnny begins to scream blue murder,’ his mother sighed.