demented vs three stops short of Dagenham

demented

adj

  • Crazy; ridiculous. 

  • Insane or mentally ill. 

  • a demented idea 

  • Suffering from dementia. 

three stops short of Dagenham

adj

  • Crazy; mad. 

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