I'm not sure in your case, Rapaire, but there is a "Dumbass for Dummies" book out now that has a simple test which you can take and find out if you are.

You have to answer a series of multiple choice questions like:

What is the difference between your ass and a hole in the ground?

a)I don't know.
b)I used to know, but I forgot.
c)A hole in the ground can sometimes be useful.
d)None of the above.

When you have answered them all and totaled up the results, consult the chart at the back of the book, and you will know for sure by the score whether or not you are a dumbass. If you are unable to understand the chart or compute the score, then you can still safely assume that you are indeed a dumbass!

Some people can't even complete the test. This happened to Shane recently.