po-boy
What does po-boy mean?
The submarine sandwich of New Orleans: roast beef and gravy, fried shrimp, oyster, catfish or hot sausage piled on a foot of Leidenheimer French bread with that paper-thin shatter crust and pillowy crumb. Order it dressed unless you know what you're doing.
Origin
Coined in 1929 by brothers Bennie and Clovis Martin, former streetcar conductors, who fed striking transit workers free sandwiches and called them 'poor boys.' The name slurred into 'po-boy' and stuck.