POST vs bust a gut

POST

verb
  • To successfully perform a power-on self-test. 

noun
  • An HTTP request method used to send an arbitrary amount of data to a web server. 

bust a gut

verb
  • To work or try very hard. 

  • To develop a pain in the side from laughing hard. 

How often have the words POST and bust a gut occurred in a corpus of books? (source: Google Ngram Viewer )