At a red light, I glanced at the driver of the car next to me. He looked at me, hit his fist into his palm and then raised his eyebrows.
He wanted to play Rock, Paper, Scissors!
Of course I did, and chose rock. He chose scissors. I won! We both smiled, thumbs upped each other, and then the light turned green.
What a dumb little interaction, but it left me smiling the whole drive. I needed that today. Thanks, rando in the car next to me!