Mary Joanna vs dank

Mary Joanna

noun
  • Marijuana; cannabis. 

dank

noun
  • Strong, high-quality cannabis. 

  • A small silver coin formerly used in Persia. 

  • Moisture; humidity; water. 

adj
  • Moist and sticky, (by extension) highly potent. 

  • Dark, damp and humid. 

  • Great, awesome. 

How often have the words Mary Joanna and dank occurred in a corpus of books? (source: Google Ngram Viewer )