I never thought about him being medicated. I guess that's a possibility I hadn't considered. I thought he had been warned by his handlers so often to be careful and consider each word he said so that it could not be used in ads against him, like the "100 yrs. in Iraq" clip, and since he is so old, it's hard for him to concentrate on thinking and talking at the same time. He could probably do one or the other, but not both simultaneously, at least not at a normal pace. LOL!
Next time I see him doing this, I will look for signs of medication.