I know how you feel sometimes. Though, my issue is that I could probably think deeper... most of the time, I just don't feel like putting effort into it, so a lot of the time what I say sounds like a run-on sentence. Sometimes I feel like I truly have ADD, but it's not that I can't concentrate on anything... it's just that I'm jumping between things so much and I just can't say things fast enough. It's the feeling of starting a project, never finishing it... though you started another project anyway.
Nobody is as dumb as they like to think. On the other hand, people are rarely as smart as they say they are