The accent that people from the New York and other east coast states speak with, accenting certain vowels when is it unnecessary. This word is mostly know to people on the west coast as it is used as a point of humor.
Hey, you wanna go down the the Yonkers- except when using a double-woobity it would sound more like Yaawnkaas. Or the did u see the "Bwaaahstun" (Boston) game last night?