You know on the bus - how you size people up. Check out their appearance and their style, have brief imaginations of what kind of person they could be.
Today in front of me on the bus was a guy: a bit taller than me, broad shoulders, wearing a football outfit with trainers and a big gym bag. He has a trendy hair cut and looks a bit like a bear man with a full well groomed beard.
When we're both getting off at the same station I see his hand when he holds on to one of the rails inside the bus.

Turns out we're wearing the same shade of pearly shine nail polish.