How many times have you done this?
I was walking over to Thai on 1st for a long-planned lunch with a friend.
A woman on a bike waved at me. Thoughtfully realizing I might not recognize her because of her helmet and sunglasses, she said "Hi, Paul -- it's Suzi Hokonson."
I have known her more than 20 years. She was very encouraging when I first started riding a bike to work in 2008.
So naturally, I waved back and shouted "Hi, Cindy!"