CF vs gong show

CF

phrase
  • carried forward 

noun
  • center front, a line on a pattern marking the center on the front side of a piece of clothing 

adj
  • child-free 

gong show

noun
  • An event that proves to be a disaster, often in a fun or memorable way. 

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