my giddy aunt vs shit fire and save matches

my giddy aunt

intj
  • An exclamation of astonishment, confusion, despair, etc.: my sainted aunt, my sainted uncle. 

shit fire and save matches

intj
  • An exclamation of surprise. 

How often have the words my giddy aunt and shit fire and save matches occurred in a corpus of books? (source: Google Ngram Viewer )