B E B E R E

You cahnt get theah from heah, deah.

Granted I'm not a native (having only lived here my adult life), but this is what I've always heard and this is how I refer to the big streets in Boston:

Mass Ave
Comm Ave
Huntington Ave or Avenue
Dot Ave (Dorchester Avenue)

Have heard both Shawmut Ave and Shawmut Avenue (the former more than the latter)

Cambridge Street, however, both in Camb and in Boston.

Never heard the Massachusetts Turnpike be called anything but the Mass Pike.

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I think it depends on whether you're originally from here or if you're an import, rather than 'rhythm and meter.'