Now that I am too far away from the big easy, you don't know how much I miss being able to use lagniappe, neutral ground and beaucoup (meaning a lot, like in I got beaucoup to do) - pronounced boo-coo. You also go by someone's house when you are going for a visit. You might also say, where ya at for hello. I was a New Orleans transplant, and still have that east Texas/Arkansas/Oklahoma base to my accent, even after moving to Idaho and then Utah, and you'll never get me to stop saying Y'all or got instead of have,(as in, I got some, or I ain't got none) but my sister-in-law, born and raised in New Orleans sounds like she's from Brooklyn.
I'm from Boston, and I use beaucoup...sort of...because the word "buku" was used in Full Metal Jacket. But beaucoup is one of those French words that kind of slips into conversation depending on who I'm talking with.
And I am not sure of the connection, as my grandparents were all from Ireland, but all my life everyone in my family has used "go by his house," too.