However, with the approach of World Toilet Day on Friday this can easily be rectified with the Flush Tracker (via @DaveGorman).
The concept is shit, literally. You tell it where you are and when you flushed and tracks your flush on a googlemap telling you how far it's gone and what speed it's travelling at.
The idea is to raise awareness of the sewage systems which we all take for granted and the issues of sanitation in places without them.
World Toilet Day