beat off vs frig

beat off

verb
  • To masturbate, usually a man of himself. 

  • To waste time. 

  • To drive something away with blows or military force. 

frig

verb
  • to masturbate 

  • to mess or muck (about, around etc.) 

  • to fuck; to have sex. 

  • to make a temporary alteration to something, to fudge, to manipulate 

noun
  • A temporary modification to a piece of equipment to change the way it operates (usually away from as originally designed). 

  • A fuck. 

  • An act of frigging. 

  • Dated spelling of fridge. 

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