batshit vs hatstand

batshit

adj
  • Extremely irrational or unreasonable, insane, crazy. 

adv
  • Used as an intensifier, particularly for insane or synonyms. 

noun
  • Nonsense, horseshit; especially when said by or attributed to someone irrational. 

  • Fecal matter produced by bats. 

  • Extreme irrationality or unreasonableness, insanity, craziness. 

hatstand

adj
  • Crazy, insane. 

noun
  • A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats. 

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