It really is embarrassing how much he looks like a mall impersonator. Look at the way the right hand one widens his eyes, it's a huge tell. They practice the face to crowds who tend to cheer and want to hear funny lines, so the expression morphs into a goofier version of the real person. I seriously wonder if they got him out of just such a gig. However, I MIGHT be persuaded to believe that he just had a couple strokes and dementia. I knew a lady with Alzheimer's once, and her facial expressions really changed and got weird when she was having an episode.