How some native New Englanders pronounce "Boston". The Boston accent is known for being non-rhotic (R's are seldom pronounced) and broad, sometimes nasal, vowels.
Other examples of pronunciation:
New Guy in Boston: Can you say park the car in Harvard yard?
Guy born in Bahston: What're you, retahded?
Boston. Follows the newEngland Trend of adding "a" were "o" is commonly said. Why, because we ah that Fackin' cool.
Tim: The Yankees suck nuts.
Ryan: And Why the Fack is that?
Tim: Cause they'ah from New Yahk and nat Baston, cause New Yoahahs ah a bunch of fairys who drink stahbucks and live in "the city".