THERE'S a good example ..
Can't = cahnt, but the T is not so much a T as a T-ified D ..
Anyway ... yeah ... as they say in new yock ... fageddaboudit.
Found this video of a British girl doing various English accents — it’s hysterical — predictably, the only one that sounds normal and unaffected to me is the Seattle variation. Wouldn’t you know I’m from (and in) Washington State (Warshington, for you?)
http://www.youtube.com/watch?v=n0tRphsvM8M&feature=related