Lung Butter

The viscous, yellow-green fluid coughed up after playing a reeded instrument for a prolonged period of time. Such as a clarinet or the bagpipes

Man 1: i played my pipes for three hours yesterday and had to cough up about four pounds of lung butter.

Man 2: dude that's gross why don't you just quit the band?
Man 1: because highlanders is life.

by Therealrothman November 24, 2016

Lung Butter

Phlegm. The thicker, the more yellow, the more flavorful, the better...I wouldn’t recommend spreading it on your toast though.

The worst part of being sick is hacking up a mouthful of lung butter when you have no place to spit.

by LeftCoastOriginal November 19, 2018

Lung Butter

The mucus you cough up - usually in the morning after smoking excessivly the night before.

Good morning darling... Yikes! That's some serious lung butter you just coughed up.

by ChewingGin August 3, 2023