I work fast. Really fast. For a basic immunization appointment, I can bring someone in, chat a bit, review their records, fill out paperwork, give the vaccine & bill it in the computer in less than 10 minutes.
Yet some patients still come in & tap their foot or drum their fingers impatiently, tell me that they have to get to class & ask me how long it will take. Well, kiddo, it was going to be about 6 minutes but just for spite, now it's gonna be 20.
People that show up late for appointments. We give them a 10 minute leeway, which I think is more than fair. But I've seen people sauter in 20 or more minutes late & can't understand why we can't just squeeze them in.