Yes but can you sneer like Huw Edwards?
Thinking about it, I wonder how much mass media has an effect on the development of our accents. I spent most of my time watching BBC news bulletins with all their received pronunciation here and sundry (still doesn't explain the Huw Edwards thing, though, perhaps) and some of it has stuck permanently. Listening to Nicky Campbell in the mornings for the last few years (I can't be bothered to change the radio station anymore) seems to have rekindled my Scottish twang a little, too.
Kids when they're play acting always use their approximation of an American accent. At least mine did. Obviously a TV influence. Maybe you just never grew out of it? Darkest Lanarkshire, me, although working in Edinburgh for 20 years has softened it a lot.