full throttle vs like a blue-arsed fly

full throttle

noun

  • A maximum setting on an engine or motor control. 

  • A maximum level of speed, effort, or risk. 

adv

  • All out; at maximum speed, effort, or risk. 

like a blue-arsed fly

adj

  • To be frantic, harried or restless 

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