LBFM vs crumpet

LBFM

crumpet

noun
  • A person (or, collectively, persons), usually female, considered sexually desirable. 

  • A type of savoury cake, typically flat and round, made from batter and yeast, containing many small holes and served toasted, usually with butter. 

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