hatstand vs one brick short of a full load

hatstand

adj

  • Crazy, insane. 

noun

  • A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats. 

one brick short of a full load

adj

  • Not mentally sound; insane. 

  • Stupid. 

How often have the words hatstand and one brick short of a full load occurred in a corpus of books? (source: Google Ngram Viewer )