beetlehead vs shitneck

beetlehead

noun
  • A stupid fellow; a blockhead. 

  • The black-bellied plover, or bullhead (Pluvialis squatarola). 

shitneck

noun
  • An idiot; an objectionable person. 

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