Sick guy: Excuse me.
Nurse: Yes?
Sick guy: I was wondering if everything is all right back there. I've been waiting out here for a really long time.
Nurse: Do you have an appointment?
Sick guy: Yeah, it was at 3.
Nurse (after looking at the clock that reads 3:35): Well, we're just really full today. Don't worry; we haven't forgotten you.
Sick guy: Oh yeah? What's my name?
Nurse: Umm... (long silence)
Sick guy: See, you did forget me!
Nurse: Well, just take a seat and we'll get you soon.