ball sack vs wild man

ball sack

noun
  • An objectionable person (especially a man). 

  • The scrotum. 

wild man

noun
  • A man who advocates unorthodox or outrageous opinions or who behaves in an eccentric manner. 

  • A rowdy, dissolute, rash, or violent man. 

  • A primitive man who dwells outside of civilized society; a savage person without culture. 

How often have the words ball sack and wild man occurred in a corpus of books? (source: Google Ngram Viewer )