bathtub gin vs jet fuel

bathtub gin

noun
  • Gin or a similar alcoholic beverage which is of very poor quality, as if made by a homebrewer in a bathtub. 

jet fuel

noun
  • Strong home-brewed alcoholic drink; moonshine. 

  • kerosene 

  • The fuel that powers a jet aircraft. 

How often have the words bathtub gin and jet fuel occurred in a corpus of books? (source: Google Ngram Viewer )