lung-butter

lung butter

Thick green- or yellow-colored mucus that is produced as a result of a respiratory disease or infection and coughed up out of the mouth; phlegm. My grandmother always kept a pack of tissues in her pocket that she could spit her lung butter into after she had a coughing fit. Look, I get it—you're sick. But at least have the decency to rinse the lung butter down the drain after you spit it into the sink!
See also: butter, lung
Farlex Dictionary of Idioms.

lung-butter

n. vomit. God, you got lung-butter on my shoe!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • lung butter
  • lunger
  • nose-lunger
  • spit in
  • spit in (something)
  • spit into (something)
  • hairball
  • spit on
  • spit on (someone or something)
  • be (as) thick as thieves