blotter acid vs purple haze

blotter acid

noun
  • Blotter paper impregnated with the drug LSD, to be taken orally. 

purple haze

noun
  • lysergic acid diethylamide (LSD) when used as a recreational drug 

  • One of numerous strains of cannabis known for their high THC content and recognizable by the color of their leaves, which vary from solid purple to flecked violet. 

How often have the words blotter acid and purple haze occurred in a corpus of books? (source: Google Ngram Viewer )