jellybrain vs peabrain

jellybrain

noun

  • A muddled thinker; a stupid person. 

peabrain

noun

  • a stupid or clumsy person; a cretin. 

  • the brain of such a person. 

adj

  • stupid, clumsy, idiot 

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