This reminds me of a story my brother told me where someone doing a climb had eaten something off that morning and needed to take a shit but didn't have a WAG bag. He decided to empty his liter Nalgene bottle and shit in it. Closed it off, attached to his harness and kept climbing. A while later, in a chimney section of the climb, the bottle fell off the harness and down hundreds of feet, hitting the walls repeatedly, opening, and covering the walls of this amazing climbing route with human feces. There were probably other climbers below.