Talking about your next meal while eating the current one
Yes, this happens in other places and cultures, but nowhere is this practice so prevalent as it is in the Crescent City. Being obsessed with cuisine -- from down home cookin’ to elegant fine dining -- is essentially a birthright here. The next meal, restaurant news, recipes, salacious local food world gossip, openings, closings... these are all viable and frequent mealtime topics.
Mixing your own cocktail sauce at the table
New Orleans restaurants know better than to serve a meager portion of underwhelming cocktail sauce with your seafood (especially raw oysters)... instead, you get to DIY with a selection of lemon wedges, hot sauce, horseradish, and Worcestershire. Everyone likes it a bit different -- Mom loves the lemons, Uncle Ernie digs Tabasco, but no horseradish -- so we prefer to do it ourselves.
Keeping shrimp boots available at all times
... even on a sunny summer day. Sure, it might be clear and bright now, but in just about three hours, the heavens are going to split open and dump a foot of rain on you for about an hour.
A distaste for cardinal directions
What the hell are north, south, east, and west? I’m sure you mean "Uptown, Downtown, Backatown, River-side, Lake-side," right?