Today, folks, we need to revisit preschool and bathroom etiquette. When we were taught to use the potty, our parents or teachers laid out some basic rules, including close the door, wash your hands, replace the toilet paper on the roll – and knock.

Or did I make that last one up?

Thankfully, the majority of the population has retained the “close the door” rule, and hopefully most people wash their hands. Replacing toilet paper on the roll is an iffier one. I know people that don’t.

But knocking?