round the bend vs touched

round the bend

prep
  • Crazy, mad or insane. 

  • Close to or in close proximity to another location. 

touched

adj
  • Slightly mentally deficient; touched in the head. 

  • Emotionally moved (by), made to feel emotion (by). 

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