Baby Lungs
Someone that coughs consistently after each hit as though its their first time smoking.
"Damn John! You got some fucking baby lungs, quit coughing."
Lung Baby
Coughing up an off collored(greenish brown)colloidal lump of sputum that looks just like a human fetus complete with umbilical cord .
Within a two week period we both coughed up a lung baby .