boy in the boat vs nubbin

boy in the boat

noun

  • The human clitoris. 

nubbin

noun

  • The clitoris. 

  • A small protuberance, bud, bump, or knob. 

  • A stub, especially a stub of undeveloped corn or fruit or nipple. 

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