johnnyb:

Mind-blowingly moronic. Doesn't even work as irony.

Children are carriers of disease. This is not in dispute - just ask any primary school teacher. Yet they are allowed everywhere, constantly endangering the public health.

Dogs are dirty and smelly. They harbor parasites (fleas and ticks) that carry disease. They lick their anuses and then people. If I wish to visit a public park, I must endure these threats.

Old people are frequently sick with contagious infections. Sick people are, well, sick. Yet they are in grocery stores handling food. They breathe all over people in poorly ventilated areas.

I fail to see how this does not follow the same logic (and taste) as your "shitting" argument.