nobody? really? some of my best friends are the shy stare-at-your-shoes types.
Boring, again, is in the eye of the beholder. Personally, I find extroverts in general to be a little irritating. Frankly, I'd rather have you try to explain to me what a fourier transform is than tell me how great your ren faire experience was.
the worst are those guys who won't shut up about contrails or jesus or organic food or the democrats or the republicans or corn syrup or whatever. I know we all believe weird shit. Hell, I do too. I don't mind hearing a little about it, but it gets boring pretty fast if that's what you are really into.