perfect storm vs shit show

perfect storm

noun
  • A situation whereby several problems come together and make everything worse. 

  • A powerful hurricane or other major weather disturbance, especially as produced by a combination of meteorological conditions. 

shit show

noun
  • A situation characterized by chaos, confusion, or incompetence. 

  • A messy situation, especially involving drunkenness and partying. 

How often have the words perfect storm and shit show occurred in a corpus of books? (source: Google Ngram Viewer )