crazy like a fox vs crooked

crazy like a fox

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

crooked

adj
  • Dishonest or illegal; corrupt. 

  • Not straight; having one or more bends or angles. 

  • Set at an angle; not vertical or square. 

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