beaver eater vs muff diving

beaver eater

noun

  • Someone who performs cunnilingus. 

  • A Canadian person, especially a French Canadian. 

  • Used other than figuratively or idiomatically: see beaver, eater. 

muff diving

noun

  • Cunnilingus. 

adj

  • Performing cunnilingus; that performs cunnilingus. 

How often have the words beaver eater and muff diving occurred in a corpus of books? (source: Google Ngram Viewer )