devil's doorbell vs skittle

devil's doorbell

noun
  • The clitoris. 

skittle

verb
  • To knock down (skittles). 

  • To defeat easily. 

  • (sometimes with out) To rapidly bowl out a succession of batsmen. 

  • To play skittles. 

  • (with down) To squander one's money. 

noun
  • One of the wooden targets used in skittles. 

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