shart vs shut the front door

shart

noun
  • An instance of sharting. 

  • The resulting excrement from sharting. 

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

shut the front door

phrase
  • shut the fuck up (usually expressing disbelief) 

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