BOBFOC vs tip drill

BOBFOC

noun
  • Synonym of butterface (“a person with an attractive body but ugly face”). 

tip drill

noun
  • Synonym of butterface: A person with an attractive body but an ugly face. 

  • A practice drill where a line of players improve their rebounding skills by catching a rebound in the air, tossing the ball back against the backboard before landing, and returning to the end of the line to go again. 

  • A person who is gangbanged. 

How often have the words BOBFOC and tip drill occurred in a corpus of books? (source: Google Ngram Viewer )