LUNG bu ter noun -term used for the discharge that comes out of one's lungs after a severe coughing spell while one has a respiratory infection. the color and texture are quite similar to butter.
Dude 1: "Holy Shit Man. That's one hellofa cough you have. You gonna be ok?
Dude 2: "Yea man, the shit I'm hackin' up looks just like lung butter."
Dude 1: "Fuck man. That's nasty shit."
by shtetl_mensch July 17, 2006

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Top Definition
A phrase used to describe that nasty greenish/yellow goo that smokers cough up in the morning.
Man i coughed up a sticky wad of lung butter this morning, i gotta quit smoking.
by My arms Your hearse May 08, 2004

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Post upper respitory "chest cold" mucus.
Thick and slimy. When is dries, it has the texture of canned cheese.
by Dr. Fromunda February 06, 2003

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The greenish-yellow snot that is hacked up from the lungs. Usually when one is sick.
John was hacking up lung butter all last week when he had a cold.
by Mindalina March 05, 2008

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Snot or mucus that comes from the throat, normaly from smoking to much bud or cigarettes.
"dude i just coughed up some nasty lung butter"
by grizzlefoshizzle January 27, 2008

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Phlegmlike substance, usually darker and accompanied by chunks of solid booger.
After smoking, I always hock up wads of lungbutter.
by kellenpierce January 28, 2004

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Phlegm, mucus, and general by-products of a cold or throat infection.
I'm tired because I was up all night coughing up lung butter
by Niall d January 10, 2007

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