Walking into an empty bathroom at work to do your business.
I'm going to be frank. Everyone prefers to poop in peace.
I know I breathe a sigh of relief every time I walk into the bathroom at work and all four stalls are EMPTY! For those of you who can poop in the presence of others...um, more power to you, I guess. I need my solitude.
And while I'm on the topic, tiny courtesy #1: the courtesy flush. You know what I'm talking about.