genital organ vs pee-pee

genital organ

noun

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

pee-pee

noun

  • The penis or vulva; genitalia. 

  • Urine. 

verb

  • To urinate. 

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