> Getting back to the original subject, though, I am curious: Does anyone else here have the regular experience of having their age grossly mistaken? If so, does it bother you, and if so, how do you deal with it?

Yes indeed. I am recently twenty years old, but frequently mistaken for someone in his mid-to-late twenties. A co-worker of mine refused to believe me when I told her I was nineteen (back when I was, I mean) - I had to show her my driver's licence to prove it. :-} Similarly, my boss thought I was twenty-five.

I can't really say I mind. Yeah, all of my friends are older than I am, but I don't feel like "the little kid" or anything - I recall mentioning that several times in relation to the convention of last summer.