You know I can actually tell that I've been a parent too long because I find myself thinking all these encouraging thoughts for random passers-by. Internal monologue: "Look whose hair is combed so well. You're walking so fast big man. Picking up trash! Aren't you a good boy. That's a pretty skirt you've got on young lady!"
I guess there are worse mental spaces to occupy though. I'm afraid I'm going to slip one day though and try to motivate a friend "You're driving so well!"