If you ever really need to go to the bathroom to do #2 and you have no place to go, try employing the Su-Jok therapy of Korean scientist Park Jae Woo. Should you have the urge to go, take some sort of a blunt object (like a pen) and trace a line with great pressure and depth in a clockwise direction on your left palm and in a counterclockwise direction on your right palm, and your urge will immediately cease.
Woo claims that if you do this in reverse, it will help you go. I have yet to try it. Who said all I can do is rant about economics? That was from Rose George’s excellent, the Big Necessity.
Here’s another tidbit: in Japan, 2.5 million units of Kin no Unko have been sold as good luck charms. What are these? Golden feces shaped objects.