The youthful clothing makes him look even older. He was only like 60 here, but looks 70 at best.

Fun fact: The period at the end of Dr. was removed in the 1950s because the cursive logo made it look more like "di"

di pepper, bart, di

That whistling piano player?

That's an American Werewolf in London.

I don't know what that is, but if it were actual Dr. Pepper, it would have blasted the hell out of that bottle when you shake it that violently.