It may be a different test, or scoring has changed since I got my original degree. But 60 is still retarded.
I'm not so sure about that. I believe 100 is by definition the average, so most people would fall in between 90-110.
Most people absolutely do not fall around 120-140.
120 is considered well above average, 130 is gifted and 140 is superior (though names change based on which test and who administers it).
100 is average. As said above, most people are between 90-110.
And don't forget that 50% of the population will be measurably below 100.