how long do you wait when..
a) the person you're supposed be having lunch with doesn't show up at your regular time and place? [btw, they DON'T have a cellphone]
b) the doctor is still not ready to see you, although you were told to be there promptly at 2pm so that he could run some very important tests?
c) the restaurant is busy as can be! you've never seen it be this busy, the waiter came by and handed ya'll the menus about oh.. 15 minutes ago, he took your drink orders down but still hasn't come back?