So I’m on the subway standing in front of the door. Train stops in the station, doors open, pretty girl walks in and tries to walk past me. I let go of the pole, take one step sideways to let her through. She takes one step to the opposite side and one step past me. I make a 180° turn and hold onto another pole at the same time as she’s making a similar turn. We’re face to face now. I smile, she doesn’t; I don’t think she realized we just did a two-step dance :)