#drinker  a person who drinks liquids
  supertype:  #consumer  a person who uses goods or services
  subtype:  #gulper__guzzler  a drinker who swallows large amounts greedily
  subtype:  #quaffer  a person who drinks heartily
  subtype:  #sipper  a drinker who sips
  subtype:  #sucker.drinker  a drinker who sucks (as at a nipple or through a straw)

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