pee-pee vs tighties

pee-pee

noun

  • The penis or vulva; genitalia. 

  • Urine. 

verb

  • To urinate. 

tighties

noun

  • Men's or boys' briefs. 

  • Form-fitting cycling shorts. 

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