genital organ vs prong

genital organ

noun
  • An organ used in sexual reproduction or sexual stimulation; a sex organ; (in plural) genitalia. 

prong

noun
  • The penis. 

  • A thin, pointed, projecting part, as of an antler or a fork or similar tool. A tine. 

  • A branch; a fork. 

verb
  • To pierce or poke with, or as if with, a prong. 

How often have the words genital organ and prong occurred in a corpus of books? (source: Google Ngram Viewer )