If you want to read a continual stream of lavatorial humour, visit WaterAid's page dedicated to World Toilet Day.
All joking apart, there is a very serious issue here. 40% of the world's population don't have access to home or public sanitation.
Without toilets disease and death are commonplace. Illness prevents people from working and stops children going to school. Teenage girls are too embarrassed to go to school without latrines and teachers won't work in them.
WaterAid works hard to find simple and low cost solutions to the problem, and what is more, they don't have any products to foist on unsuspecting people.