Ode de Toilet

So I'm in the mens' room at the Tops in Arcade N.Y., washing my hands (even tho' no one was looking!) and I glance up to read the instructions for employees as to when they should wash their hands. Along with the usual was this one:

• AFTER VISITING THE TOILET

Now I've visited Grandma, visited friends, even visited a foreign country or two, but I can't remember ever visiting a toilet!