devil's doorbell vs erection

devil's doorbell

noun
  • The clitoris. 

erection

noun
  • A penis or clitoris that is erect. 

  • The state or quality of being erect from engorgement with blood. 

  • The physiological process by which erectile tissue, such as a penis or clitoris, becomes erect by being engorged with blood. 

  • Formal approval and official establishment of an institution such as a society or a monastery by higher church authorities. 

  • Anything erected or built. 

  • The act of building or putting up or together of something. 

How often have the words devil's doorbell and erection occurred in a corpus of books? (source: Google Ngram Viewer )