butter someone's biscuit vs delight

butter someone's biscuit

verb
  • To interest or appeal to someone; to make someone happy. 

delight

verb
  • To give delight to; to affect with great pleasure; to please highly. 

  • To have or take great pleasure. 

noun
  • Joy; pleasure. 

  • Something that gives great joy or pleasure. 

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