melt someone's butter vs tickle someone's fancy

melt someone's butter

verb
  • To appeal to someone's fancy. 

  • To turn someone on; cause feelings of arousal. 

tickle someone's fancy

verb
  • To amuse, entertain, or appeal to someone; to stimulate someone's imagination in a favorable manner. 

How often have the words melt someone's butter and tickle someone's fancy occurred in a corpus of books? (source: Google Ngram Viewer )