brain fart vs disinterest

brain fart

noun
  • An instance of absent-mindedness or forgetfulness. 

  • Something ill-considered and said or done impulsively. 

disinterest

noun
  • An absence of interest (attention or curiosity). 

  • The absence of interest (bias or stake). 

verb
  • To render disinterested. 

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