beaver eater vs lip service

beaver eater

noun
  • Someone who performs cunnilingus. 

  • A Canadian person, especially a French Canadian. 

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

lip service

noun
  • Cunnilingus (sometimes also referred to as giving lip). 

  • Promising but empty talk; words absent of real action or intention. 

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