shitter vs windpipe

shitter

noun
  • The anus. 

  • A toilet or lavatory; an outhouse. 

  • One who defecates. 

  • Someone lacking skill, especially in a video game. 

  • An objectionable person or thing. 

windpipe

noun
  • The anus. 

  • A section of road or bridleway which has a reputation for having strong crosswinds or localized wind swirls. 

  • Any duct for air or other gas. 

  • The trachea. 

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