jellybrain vs meathead

jellybrain

noun
  • A muddled thinker; a stupid person. 

meathead

noun
  • An ungainly, dull or stupid person; someone who is lazy, disrespectful and/or whose beliefs and philosophies clash with another. 

  • A large, muscular, stupid man, especially an athlete. 

  • A member of the Canadian Forces Military Police. 

How often have the words jellybrain and meathead occurred in a corpus of books? (source: Google Ngram Viewer )