flange vs tunnel of love

flange

noun
  • The vulva. 

  • The projecting edge of a rigid or semi-rigid component. 

  • The electronic sound distortion produced by a flanger. 

  • An ability in a role-playing game which is not commonly available, overpowered or arbitrarily imposed by the referees. 

  • The collective noun for a group of baboons. 

  • An external or internal rib or rim, used either to add strength or to hold something in place. 

verb
  • To be bent into a flange. 

  • To make a flange on; to furnish with a flange; to bend (esp. sheet metal) in the form of a flange. 

  • To mix two copies of together, one delayed by a very short, slowly varying time. 

tunnel of love

noun
  • The vagina. 

  • A carnival dark ride for couples in boats, either relaxing and romantic, or spooky (encouraging the couple to cling to one another). 

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