...and I dare you not to at least break a smile. Even if you don't think it's funny, you will probably fall prey to Martha MacCallumn's very contagious laugh.
I'm sure there will be those who will take the "high road" and condemn me for thinking this is...well, very funny. I take refuge in my incivility only because of what she does after she spills--she gets up and walks down the escalator!
Putting all that aside, what on earth was she thinking? Even if this was the first time she rode in a wheel chair, when was the last time she drove her car up a flight of stairs?