ball sack vs blighter

ball sack

noun
  • An objectionable person (especially a man). 

  • The scrotum. 

blighter

noun
  • A person, usually male, especially one who behaves in an objectionable or pitiable manner. 

  • A man or child, especially an annoying one. 

  • One who blights. 

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