crap one's pants vs do it

crap one's pants

verb
  • To defecate into one's pants or other clothing. 

  • To be extremely frightened. 

do it

verb
  • To urinate. 

  • To be appealing or suitable. 

  • Used other than figuratively or idiomatically: see do, it. 

  • To have sex; make it. 

  • To do something exceptionally foolish or unacceptable. 

How often have the words crap one's pants and do it occurred in a corpus of books? (source: Google Ngram Viewer )