fancy-pants vs the thing

fancy-pants

noun
  • Someone fancy, silly or attractive. 

adj
  • overly fancy with little function; newfangled; complicated 

the thing

noun
  • The desired thing: someone or something that is popularly favored. 

  • The needful thing: something suitable for the purpose. 

How often have the words fancy-pants and the thing occurred in a corpus of books? (source: Google Ngram Viewer )