cray-cray vs nut-bar

cray-cray

adj
  • Crazy. 

nut-bar

adj
  • Crazy, mad. 

noun
  • A bar or shaft with an aperture for a bolt or threaded rod to attach to or pass through. 

  • An insane person, a crazy person, a madwoman or madman. 

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