The first thing I do when I know someone is coming over to my place is check the bathrooms. For unflushed pee.
I’ve written earlier about how I talk to my friends on my phone whilst using the W.C. Out of respect I don’t flush during a call. I’m not an animal, for God’s sake. When one of my buddies is crying because of Grandma’s gout, that is not the time for a double flusher. But often the call goes longer than my dirty business, so I end up leaving the bathroom and walking into the bedroom to stare at myself in the full length mirror. And then I forget to go back after the call and destroy the nonsense.