beat off vs lay bare

beat off

verb
  • To waste time. 

  • To drive something away with blows or military force. 

  • To masturbate, usually a man of himself. 

lay bare

verb
  • To make bare; strip. 

  • To expose to view, reveal, uncover. 

How often have the words beat off and lay bare occurred in a corpus of books? (source: Google Ngram Viewer )