butt pirate vs fartknocker

butt pirate

noun
  • A homosexual man. 

fartknocker

noun
  • A homosexual man. 

  • An instance of being thrown from, or hitting the ground after being thrown from, a horse. 

  • A contemptible or annoying person. 

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