melt someone's butter vs turn someone's crank

melt someone's butter

verb
  • To appeal to someone's fancy. 

  • To turn someone on; cause feelings of arousal. 

turn someone's crank

verb
  • To arouse a person's interest or passion; to excite someone. 

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