boff vs box someone's ears

boff

verb
  • To hit; to strike. 

  • to have sexual intercourse (with someone) 

noun
  • A great success; a hit. 

  • A pupil who works hard; a swot. 

  • A line in a film etc that elicits such a laugh. 

  • A big laugh. 

  • A hit or smack. 

box someone's ears

verb
  • To slap someone on the side of the head, usually as an informal punishment. 

How often have the words boff and box someone's ears occurred in a corpus of books? (source: Google Ngram Viewer )