dirt chute vs fuckhole

dirt chute

noun

  • The anus. 

fuckhole

noun

  • The anus. 

  • An inconsiderate, unpleasant or rude person. 

  • The vagina. 

  • One's sexual partner. 

How often have the words dirt chute and fuckhole occurred in a corpus of books? (source: Google Ngram Viewer )