queef vs shitface

queef

noun
  • A contemptible person. 

  • An emission of air from the vagina, especially when audible; vaginal flatulence. 

verb
  • To produce an emission of air from the vagina. 

  • To make the noise of (a thing) by means of queefs. 

shitface

noun
  • a contemptible person 

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