Blue Lung 

Blue Lung is a condition that affects people who blow lines of adderall. The blue powder gets into their lungs, causing blue, mucusy discharge from the lungs. Often, if blue enough, this discharge is swallowed, in an attempt to reap the benefits of the methy-goodness inside.

Does not affect insufflators of 30-mg tablets, as they are orange.

P1: coughs up blue mucus
P2: "Damn, son, you got a pretty bad cold, huh?"
P1: "Nah man, just got the Blue Lung, see?" shows P2 blue discharge, swallows it

Blue Lung by TapiocaCock February 28, 2009

Blue Collar Lung 

A slight cough, feeling of general malaise or discontent developed when visiting a blue collar city or area. Akin to black lung but with fewer enduring after effects, usually remedied by leaving said city or area.

OMG, I went to a monster truck rally this weekend and developed a serious case of blue collar lung.

Or:

I ran out of gas and had to stay in a small town motel last weekend, the neighboring pulp mill almost gave me blue collar lung!

Blue Collar Lung by Ursala Inspired October 2, 2011

Blue Lungs 

The physical sensation when one is about to yawn, but is cut short before the yawn is completed. This feeling can be likened to the frustration felt by "blue balls" and is usually followed by a second forced yawn.

Boy #1: *opens mouth wide*

Dammit, I didn't actually yawn.

Boy #2: You better yawn now or you'll have a mean case of blue lungs.

Blue Lungs by Tea Oh Em August 24, 2009

blue lunged 

Similar to a cockblock, but with weed. You're just about to get hiiiigh and something gets in the way.

Man that Allison really blue lunged me when she insisted we smoke crack instead.

blue lunged by richdafivenine April 22, 2011

Bluelungs 

When you smoke pot, but not quite enough to get high. Similar to blue balls

"Dude, i smoked the rest of my stash last night, but it was mostly seeds so all I got was bluelungs."

Bluelungs by Adelin Deery April 29, 2010