loony vs three stops short of Dagenham

loony

adj

  • Insane. 

  • Very silly, absurd. 

noun

  • An insane or very foolish person. 

three stops short of Dagenham

adj

  • Crazy; mad. 

How often have the words loony and three stops short of Dagenham occurred in a corpus of books? (source: Google Ngram Viewer )