In reply to andrewmcleod:
> . . . . Do I just have some magical digestive system, while most people are incapable of just going before they go, or are people just too lazy/forgetful? >
I don't think its a case of being incapable, just not ready. With the best will in the world, if its not brewed its not coming out and sometimes a brisk walk in to a crag is just what is needed to get the metabolism going, possibly combined with an element of fear?
Of course that doesn't excuse indiscriminate defacation in highly visible or well trafficked areas.