back o' Bourke vs bump in the road

back o' Bourke

adv

  • At or to an extremely remote place. 

name

  • An extremely remote place. 

bump in the road

noun

  • A very small town. 

  • A setback or obstacle, especially one which is relatively minor. 

How often have the words back o' Bourke and bump in the road occurred in a corpus of books? (source: Google Ngram Viewer )