crazy like a fox vs tricky

crazy like a fox

adj
  • Behaving in a foolish, frivolous, or uncomprehending manner as a ruse for concealing clever deeds or deeper intentions. 

tricky

adj
  • adept at using deception 

  • Relating to or associated with a prostitution trick 

  • hard to deal with, complicated 

How often have the words crazy like a fox and tricky occurred in a corpus of books? (source: Google Ngram Viewer )