lick one's chops vs look ahead to

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. 

look ahead to

verb
  • To plan for the future; to look forward to something; to be excited for something happening in the future. 

How often have the words lick one's chops and look ahead to occurred in a corpus of books? (source: Google Ngram Viewer )