gravity bong vs lid

gravity bong

noun
  • A homemade device used to smoke marijuana, consisting of a plastic jug with the bottom cut out and immersed in a vat of water, which is then raised to create a vacuum beneath its bowl of lit marijuana. 

  • Synonym of waterfall bong 

lid

noun
  • The top or cover of a container. 

  • A hermetically sealed top piece on a microchip such as the integrated heat spreader on a CPU. 

  • In amateur radio, an incompetent operator. 

  • A cap or hat. 

  • One ounce of cannabis. 

  • A restraint or control, as when "putting a lid" on something. 

  • A kid (from the rhyming slang bin lid) 

  • A bodyboard or bodyboarder. 

  • A motorcyclist's crash helmet. 

verb
  • To put a lid on (something). 

How often have the words gravity bong and lid occurred in a corpus of books? (source: Google Ngram Viewer )