I used to be a member of Mensa and the International Society for Philosophical Enquiry which have entry requirements of 150 & around 172 respectively on the Cattell scale I think. I had no interest in either as I joined when I was 16 and was more interested in computer games, cars, girls, watching cartoons etc rather than meeting at a local pub to discuss highbrow stuff or trying to put the world to rights (I was too young for the pub at that point anyway)
All I ended up with was a big collection of Mensa magazines and invites to IPSE AGM's. I was only in IPSE for a year because your membership was based on how much you got involved.
I took a couple of IQ tests and scored 174 when I was 16 on the Cattell and 181 on Stanford Binet when I was 19.
On the flip side I have no common sense whatever, I can be very shy and can only be the witty, gregarious guy some people know when I invent myself a character to be and live inside it until it becomes impossible to carry on the pretense (sociopathic tendencies maybe?). I can sometimes come across as arrogant and have never had a proper relationship or held onto a job for any period of time without quitting out of boredom or frustration. I am seeing a psychiatrist and am on anti-depressants.
I am a greater part stupid than clever and my life has been more failure than triumph. I either wish I could have been an ordinary kid or had more encouragement to fulfill the potential I maybe had rather than devoting all my energies to 12 dudes in Brooklyn.
Sorry for jabbering on, I'm a bit drunk on Glayva hic!
It's good stuff though