When I was discharged from the rehab hospital after my stroke, I was given three rules to follow:

1. Don't fall.
2. Don't fall.
3. Don't fall.

In the ensuing five years, I've only hit the ground once, and that was enough. As I say, "Gravity is a useful servant but a terrible master," something I had learned earlier in life.

I'm a big guy, and with only one side that works well, getting up is not easy.

So maybe I'm too cautious, but "fall" is a four-letter word.