air (one's) lungs
1. To use profane language. Mike always airs his lungs when he's frustrated. Please stop airing your lungs in front of the children!
2. To chat or gossip. That group of women gets together at the diner every Saturday night to have coffee and air their lungs.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
air one's lungs
1. Rur. to swear. Don't pay those old cowboys no mind. They're just airin' the lungs. I could tell John was working on his old car 'cause I could hear him out in the garage, airin' his lungs. 2. Rur. to talk, gossip, or brag. The ladies just love to air their lungs whenever they get together.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.