Western New England English is how people talk in a part of the United States called Western New England, which is in the northeast part of the country. When you hear people talk who have this kind of accent, it might sound a little different from how you talk, or how people on TV talk.
One way it might sound different is how they say certain words. For example, instead of saying "car" like you might say it, they might say "cah" instead. Or instead of "park," they might say "pahk."
Another way it might sound different is in the rhythm of their speech. They might speak slower or more deliberately than people from other parts of the country.
People who talk this way might also use certain words or phrases that are unique to this part of the country. For example, they might call a small stream or creek a "brook," or a rubber band a "elastic."
Overall, the way people talk in Western New England is just one of the many ways that accents and dialects can differ across different parts of the world!