bash the bishop vs toss off

bash the bishop

verb
  • To masturbate (male). 

toss off

verb
  • To masturbate. 

  • To drink up rapidly. 

  • To assemble hastily. 

  • To deliver in an offhand manner. 

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