Maybe you've visited one of those web quiz pages that asks you about some word choices, then tells you--often accurately--where you're from.
The quiz works because people DO use different phrases and idioms in different parts of the country.
A "hero" sandwich in New York is a "grinder" in nearby Connecticut.
Josh Katz focuses on the regional variations in his book "Speaking American: How Y’all, Youse, and You Guys Talk: A Visual Guide."
We talk to the author and try not to give away where we're from.