first milk vs wee-wee

first milk

noun

  • colostrum; beestings 

wee-wee

noun

  • The vulva or vagina. 

  • The penis. 

  • Urine. 

  • An act of urination. 

verb

  • to urinate 

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