Who's Storing their Junk in my Brain?

The fact of the matter is that I was quite smart when I was young. But at the rate I'm going, my brain will soon be as mushy as Nancy Pelosi's. It's bad enough falling tragic prey to Alzheimer's, but apparently in 2007 America, there's so much stupidity in the very air we breathe, one can actually become as dumb as a doorknob by osmosis.