With a lot of comedians, one of their major attributes is that they look comedic, with a certain hangdog or manic expression. I look like the neighborhood bully. That doesn't elicit laughter.
I spend enough time onscreen looking hangdog and depressed.
I don't know that I'm 'hangdog'. That suggests someone skulking around, unengaged. I'm not. I'm 'engaged', believe me. I have just got a slightly sad face.
There is that American pastime known as "kidding" - with the result that everyone is ashamed and hangdog about showing the slightest enthusiasm or passion or sincere feeling about anything.