shit oneself vs throw a fit

shit oneself

verb
  • To be very frightened or astonished (to the extent that one might lose control of one's bowels). 

  • To soil oneself. 

throw a fit

verb
  • To become angry, enraged, or upset; to act or react with an outburst, as by shouting, swearing, etc. 

How often have the words shit oneself and throw a fit occurred in a corpus of books? (source: Google Ngram Viewer )