sounds borderline retarded
If you look at "Unbelievable", he just has that country drawl to him. Many of my folks down south have it, and are anything but stupid. Many times, people focus on what the person sounds like, instead of do focusing on what they are saying.
For instance, if you heard a northerner saying, "A hard head makes for a soft tail" vs a southerner with a thick accent and drawl, one would assume that the northerner is more "intelligent", just by their accent and pronounciation. But, conversely, assume that the Southerner was more friendly, by their accent and drawl.