Blimey.
I just learned something new! Apparently, it's possible (if rare) to end up with a different speech accent after having a stroke. It happened to this American woman, who now sounds as though she was born and raised in London. And this woman, from England, speaks like a Parisian after her stroke! This raises so many questions. And in case you think this is a tardy April Fools joke, you can read more about it here.