The act of being so poor that you canโt afford to buy actual napkins, so you have to rip off part of your brown lunch bag to use as a napkin.
Dude #1: Yo dawg, why are you ripping your lunch bag?
Dude #2: Itโs a poor boy napkin cuh, I blew all my money on strippers and cocaine so I canโt afford to buy actual napkins.
Dude #1: Sheeiiiit that blows