Coffee drinkers are a lot like vegans. Get to know the person and you'll know they drink coffee in under 30 minutes. I also can't stand how coffee drinkers act like if they don't get their coffee within 10 seconds of waking up, they let everyone know how angry they are. "Nobody better say anything to me before my coffee or I'll go off on them!!" Hear it all the time and I just shake my head.