daft as a brush vs out of one's mind

daft as a brush

adj

  • Tending to do or say silly things. 

out of one's mind

adj

  • Insane, crazy. 

  • Temporarily mentally unstable; very distressed. 

How often have the words daft as a brush and out of one's mind occurred in a corpus of books? (source: Google Ngram Viewer )