dumbbutt vs one brick short of a full load

dumbbutt

adj

  • Stupid. 

noun

  • A stupid person; a fool. 

one brick short of a full load

adj

  • Stupid. 

  • Not mentally sound; insane. 

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