How do you talk to people who are wearing sunglasses?

When I am talking with someone who is wearing huge sunglasses, I can’t see their eyes, so I don’t know where to look. I am completely thrown off guard and feel like I’m in a one-way video conference.

Those of you who are less socially confused than me – how do you deal with this situation? Where do you look? How can you tell if the person is looking at you? What if they’re just sleeping?

Yeah, I know. It’s a slow fluther day, and I figured I’d add something, even it is completely light.