Like High Explosive, Ignorance Has a Shockwave

Blond cocktail waitress, looking at a t-shirt of George Bush and his dad with Dumb and Dumber under photos: Who is that?
Chef: Excuse me! Are you serious?
Blond cocktail waitress (a few seconds later, with dumbfounded look): Ooooooh! Is that our President? Then who is that? (pointing to the photo of Bush Sr)
Chef (grabbing head in agony): Owww!

Lulu's Restaurant
Indianapolis, Indiana

Overheard by: Ben