shart vs son of a gun

shart

verb
  • To unintentionally defecate due to relaxing the anus to flatulate. 

noun
  • An instance of sharting. 

  • The resulting excrement from sharting. 

son of a gun

intj
  • Used to express anger, contempt, disgust, astonishment, disappointment, etc. 

noun
  • son of a bitch 

  • Used encouragingly or to compliment 

How often have the words shart and son of a gun occurred in a corpus of books? (source: Google Ngram Viewer )