i'm generally very polite in my dealings with people. on the other hand i can be very frosty and impatient. on the other hand i can be very patient and kind. so maybe i'm just an average sort of person. i still tend to be very polite in person though. it is my default to be polite. usually because i don't think that quickly on the spot.
i can hold a grudge for eternity though if someone really hurts me.