For some reason considered descriptive of the noise babies emit after some kind of minor injury has been bestowed upon them by some elder brother or sister or some law of nature, Newton's in particular.

Also a hard rock/heavy metal band formed around John Sykes, formerly of Tygers of Pan Tang, Thin Lizzy, and Whitesnake.

This is a common part of the Australian vernacular, for example:

"She was screaming blue murder, fit to wake the neighbours", or

"He always gets away with blue murder, the bastard", or

"I got shafted so bad, it was blue murder".

If you are a foreigner and come to Australia, it is advisable that you listen to a few other people use this phrase before using it, as you are liable to use it in the wrong sentence and be forced to endure uncomfortable silences.

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