butt-fucking vs dickhead

butt-fucking

noun

  • anal sex 

adj

  • Engaging in anal sex 

dickhead

noun

  • The glans penis. 

  • A jerk; a mean or rude person. 

  • A stupid or useless person. 

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