Y'all
And
Them there Scientists are all pretty caddywhompus, if their brains were dynamite, there wouldn't be enough to blow their noses, and if they don't have a a hog-killin' time hearing it then it'll make me mad enough to steal a fly from a blind spider.
Americans think we all speak the same, with the classic example of brits pronouncing 'bottle of water' as 'bo'ul oh wa'er' even when they pronounce it 'boddle'ah wohder'