brain fart vs torpor

brain fart

noun
  • An instance of absent-mindedness or forgetfulness. 

  • Something ill-considered and said or done impulsively. 

torpor

noun
  • A state of apathy or lethargy. 

  • A state similar to hibernation characterised by energy-conserving, very deep sleep. 

  • A state of being inactive or stuporous. 

How often have the words brain fart and torpor occurred in a corpus of books? (source: Google Ngram Viewer )