can't wait vs lick one's chops

can't wait

verb
  • To eagerly anticipate; to find it hard to wait for a forthcoming pleasurable event. 

  • To need to be attended to right away. 

lick one's chops

verb
  • To anticipate something eagerly. 

  • To use one's tongue to remove moistness from the sides of one's mouth, as when salivating or at the conclusion of a meal. 

  • To look forward avidly to eating something. 

How often have the words can't wait and lick one's chops occurred in a corpus of books? (source: Google Ngram Viewer )