I hope you are not eating while reading this.
I had the misfortune to visit a mens toilet, as I really couldn't hold it in any longer. Nearby you could hear the sounds of someone spending more than a penny. As I was washing my hands I heard the cubicle open and the guy walking out. All my hand washing would be undone by opening the door to get out and it doesn't bear thinking what else, the keyboards, chairs and handles we probably both have touched that day. Although a recent study suggests that its people not washing their hands properly there are some who don't wash at all.
One gram of faeces contains, 10,000,000 viruses, 1,000,000 bacteria, 100 parasitic eggs.... Infection causes serious illness like diarrhoea, E.coli and results in the death of many each year especially but not exclusively in the developing world.
A stream of urine seems minor in comparison.
You are not a child. Wash your hands and flush the chain you rude, inconsiderate, dirty man.