I'm an American, and I speak with a West Coast accent, which I picked up from my parents, who're both from there originally. About the only American accent that bugs me is the Midwest, which is, ironically, where I live. That and maybe some odd regional dialects up in Maine and the Northeast. I'm alright with British accents, a few of which I can relatively easily differentiate between, but can't identify regionally. Irish, Scottish and Welsh accents are easily identifiable to me. Australian and New Zealand accents are sometimes a bit harder to differentiate between, though.
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