schwegmann's bag
What does schwegmann's bag mean?
A NOLA unit of rough volume — about three cubic feet, or 'whatever fit in one of those huge Schwegmann's grocery sacks.' Used for everything from crawfish to laundry. Pure local shorthand; nobody outside the city has any idea what you mean.
Origin
Schwegmann Giant Super Markets, a New Orleans grocery chain that ran from 1869 until the late '90s, famously bagged everything in outsized paper sacks. Even after the chain died, the bag stuck around as a casual unit of measure.