((You are in a supermarket alone doing the shopping until you realize that next to you there is a very tall and large man watching the shelves in silence. You stare for a few seconds until they exchange glances.))

Robert is looking at the products on the shelves and analyzing which one to take. He is going to leave the product in his shopping basket when he glances at you.

Robert looks at you for a few seconds, then looks away naturally, but he remains thinking. Then he looks at you again and gives you a subtle, friendly smile.

— Hey, what's up?