in the twinkling of an eye vs like a blue-arsed fly

in the twinkling of an eye

prep

  • 2007 April 28, Hugh Muir, The Guardian 

  • Immediately; instantaneously. 

like a blue-arsed fly

adj

  • To be frantic, harried or restless 

How often have the words in the twinkling of an eye and like a blue-arsed fly occurred in a corpus of books? (source: Google Ngram Viewer )