Most folks recognize Fran Drescher’s exaggerated Queens accent from “The Nanny.” I think it’s safe to say she heightens it for comedy, especially the nasal quality, but at the core, it’s how she talks. Here’s an interview from 2018.
Of course, Drescher’s an actress, so she’s learned to ramp it up – or tamp it down – as needed. In her film debut, 1977’s “Saturday Night Fever” it’s not quite so exaggerated when John Travolta drops an f-bomb on the dance floor.