IQ & attitude:
1 SD below average: "Yeah I'm smart! What?"
Average: "I guess I'm OK?"
1 SD above average: "I'm not some kind of genius, but..."
2 SDs above average: "You know I'm a member of MENSA?"
3 SDs above average: "Gods help me, people are stupid."
4 SDs above: "I suck."
Conversation
For the record, I entirely buy that you need to be *really* smart to realize you're still almost as stupid as the worst idiot around.
Replying to
(And this is about as serious as I'll ever get about IQ unless you ask me to put my geek glasses on, in which case...
... just don't, kay?)