People value intelligence and will apply that label to themselves even if it may not be true. It's a hard thing to measure though IQ does it reasonably well. To those who have a high IQ: what is it like? Can you pick up any book, read it, and understand the gist with minimal repetition? Can you infer solid and accurate conclusions based on a small amount of evidence? Is any subject or discipline up for grabs or do you have to have a keen interest in a particular field in order to flourish? What is something you are able to do that you know is because of your intelligence -- the proverbial 1,000 pound deadlift of the brain, if you will.
There is no point to these questions other than curiosity.
I'll back this up. I speak far more eloquently online than I do in real life, where my speech is highly hampered by a strong Cajun dialect/accent at times and a need to physically stop speaking to reach the ability to say a word my brain hitches on (like Jimmy from South Park).
So I'm often considered quite retarded, which leads to a lot of surprise to people who I can and do switch to a more serious topic and am able to list off large amounts of data and outpace most arguments. Not that I would call myself "smart" but my schooling at least has the physical documentation that says I was above the average to some irrelevant extent.