back forty vs the sticks

back forty

noun
  • The most remote or inaccessible part of any place. 

  • The remote part of a farm. 

the sticks

noun
  • A remote, rural area; a place that is removed from civilization such as the boondocks. 

  • The set of yardage markers used by a chain crew to indicate the ten yards between the line of scrimmage from the previous first down and the line to gain, which the offense must reach in their series of four downs in order to retain possession of the ball. 

How often have the words back forty and the sticks occurred in a corpus of books? (source: Google Ngram Viewer )