bonk vs notch on one's bedpost

bonk

noun
  • An act of sexual intercourse. 

  • Any minor collision or blow. 

  • A condition of sudden, severe fatigue in an endurance sports event caused by glycogen depletion. 

  • A bump on the head. 

  • An animal call resembling "bonk", such as the call of the pobblebonk. 

verb
  • To have sexual intercourse (with). 

  • To experience sudden and severe fatigue in an endurance sports event due to glycogen depletion. 

  • To strike or collide with something. 

  • To hit something with the front of the board, especially in midair. 

notch on one's bedpost

noun
  • A sexual conquest; a casual sexual partner. 

How often have the words bonk and notch on one's bedpost occurred in a corpus of books? (source: Google Ngram Viewer )