Trying to make the 20 minute connection between concourses in ATL and walking down the escalators to the trains when I am blocked. I politely inform her, "passing on the right", to which I get a sarcastic "Hey, I have a plane to catch too". I look back and see the 300 lb person blocking the escalator. I guess it was divine intervention that she was not on my next flight sitting next to me with flubber over running the arm rest.