assfuck vs butt stuff

assfuck

noun
  • Sodomy, anal sex, an act of anal intercourse. 

  • A jerk; an obnoxious person. 

  • An act of stunning betrayal. 

verb
  • To betray. 

  • To engage in anal intercourse. 

butt stuff

noun
  • Synonym of anal sex 

How often have the words assfuck and butt stuff occurred in a corpus of books? (source: Google Ngram Viewer )