few cards shy of a full deck vs gaga

few cards shy of a full deck

adj

  • mentally deranged; demented; insane. 

gaga

adj

  • Mentally senile. 

  • Infatuated. 

  • Crazy. 

How often have the words few cards shy of a full deck and gaga occurred in a corpus of books? (source: Google Ngram Viewer )