We drink bee-ah and pahk somewhehhh we cahnt remembah 'cause lahst night we had a pissah time aftah goin' to the packy an' buyin' a shitload o' bee-ah.
Hell, weah the only ones speakin' friggin' ENGLISH
I can tell we’re moving toowahd autumn. It’s dahk in heah, and it’s not quite seven o’clock.
That's the way Australians pronounce beer also, written out in simple phonetics. But if you listen to the actual pronunciation of "bee-ah" between an Aussie and a Bostonian you'd swear they're from two different planets. The written phonetics aren't capturing something major.
John Kennedy had an accent like unto that you're describing. It was quite unfamiliar to most of the country and was considered part of his charm.
He called Cuba "Koober".
Our relatives in Wisconsin say things like, “Day-uv, go get the boe-ut” (Dave, go get the boat.)