dangly bits vs genitalia

dangly bits

noun
  • Male genitalia, usually of a baby, child, or of a smaller than usual size; ironic reference to male genitalia. 

genitalia

noun
  • Any sex organs, whether external or internal. 

  • External sex organs. 

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