Those of you who have read this story before may skip.
While living in Mexico City, I would always jump off the bus when the door opened, usually before the bus came to a complete stop. Sort of a warm-up for the big city streets. One day, while wool-gathering, the door opened, I jumped out, and went from zero to about 12 mph immediately. It was all I could do to keep putting the one foot in front of the other. Luckily, no parked cars, cats or babies were in my way. I now refer to this as "keeping my ass behind meŽ" and use it as a metaphor when speaking of dealing with difficult situations or as a flippant answer to the boring question "How are you?" That one coulda killed me!