Some people say it that way. From what I've read, it's a pronunciation that you might here in New York or New Orleans, and I know it is also heard on the North Carolina coast. Some people say something like "oishters" as well. I'm talking about oysters...
Looking east from the cemetery out over Calico Creek
The creek my mother lives by is full of oysters, as you'll see from my photos. When I say "creek" I mean a tidal creek, not a stream or brook. In our area, there are a lot of tidal creeks, including Broad Creek, Gales Creek, Pelletier Creek, and Hoop Pole Creek — as well as Calico Creek, which runs for a few miles past my mother's retirement apartment complex and flows into the estuary of the coastal water feature called Newport River.
Bancs d'huîtres — "oishter" beds — in Calico Creek
We ate oysters for dinner last night. We were invited to a kind of a mini family reunion with cousins of ours. Families are complicated, and while we are not really first cousins but cousins several times removed with these relatives, we all grew up together as if we were close cousins. We were a good-sized clan of people descended from Benjamin and Ida Willis of Morehead City, and we all lived in the same neighborhood. Now we are all in our 60s or older.
The cousin who invited us still lives just two doors down from the house I grew up in — he inherited his house from his parents. He "roasted" live oysters for our dinner. That means he put them in a big pot, with a little bit of water in the bottom, and set the pot on a gas burner outside for a few minutes until the "oishsters" were lightly steamed and had started to pop open. They're served with a hot cocktail sauce (tomatoes or ketchup with some vinegar and horseradish added).
A shore bird among the oysters
The feast included a batch of sauteed shrimp with herbs, garlic, and olive oil, along with a basket of pan-fried cornbread and a plateful of crab cakes made with crabmeat from the local blue crabs. For dessert, we had a lemon meringue pie and a key lime pie, which is similar but made with limes instead of lemons.
Looking west up Calico Creek toward my mother's apartment complex
The photos above are of oyster beds in Calico Creek at low tide. The town cemetery is on the edge of the creek, and I took a "photo walk" around the cemetery yesterday afternoon before we went to the oyster roast.