cunt fart vs shithead

cunt fart

noun
  • A very annoying or objectionable person. 

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

shithead

noun
  • A stupid or contemptible person. 

  • A card game, the aim of which is to lose one's cards. 

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