bumfuck middle of nowhere vs north forty

bumfuck middle of nowhere

noun
  • Synonym of bumfuck nowhere 

north forty

noun
  • Any remote place. 

  • A 40-acre section of land, located in the northernmost part of a farm or ranch. 

  • Farms, ranches, or agricultural land collectively. 

How often have the words bumfuck middle of nowhere and north forty occurred in a corpus of books? (source: Google Ngram Viewer )