I know abut the bank stare. that I have seen a few times but have not read anything about exaggerated facial expressions. When he coughs (which is a lot) he looks like he is in dire agony face all scrunched up and if he laughs at something, the same face all scrunched up eyes closed. He makes these expressions a lot even if he farts looks like he is in dire pain which he isn't!!!! Just haven't seen this mentioned anywhere????