bumfuck vs butt-fucking

bumfuck

noun
  • Anal sex. 

  • An isolated place far removed from major cities. 

adj
  • I hate living in this small town in the middle of bumfuck nowhere. 

  • Isolated and neglected, undesirable, or held in contempt. 

verb
  • To fuck anally. 

butt-fucking

noun
  • anal sex 

adj
  • Engaging in anal sex 

How often have the words bumfuck and butt-fucking occurred in a corpus of books? (source: Google Ngram Viewer )