A "paper lung" is a person who can't handle a single toke of a joint. After just one toke they will instantly dry-heave and cough to death as if they have coronavirus. A paper lung is also commonly known as a pussy.
Gary: "Oi mush, you want a toke of this?"
Pussy: "Yeah ok"
Pussy: *coughs to death*
Gary: "what a fuckin paper lung"
Pussy: "Yeah ok"
Pussy: *coughs to death*
Gary: "what a fuckin paper lung"
by Yung Petrol March 23, 2020