"Shea" v. "Eh"

In Britney Spears' hometown near NOLA - one often ends a sentence with the interjection, "Shea!" (or "Shea?").
As in: "You get down from da ca an git some Gumbo, Shea?".
(Are you getting out of the car to have some Gumbo? Yes?)

But while watching the Olympics from Canada - I noticed similarities between Canada and Louisiana.
Canada has Nelly Furtado - Louisiana has Britney Spears.
Thanks to the Acadians, French is spoken in parts of Canada - French is spoken in parts of Louisiana.
Canadians often end a sentence with "Eh!" (or "Eh?") - those from Loisiana often end a sentence with "Shea!" (or Shea?").