The old dude never met my granddad, that's for sure. Conversation would've went this way:
"Well, that's cool. Here, have some of mine."
My granddad: "Sayyyy! Free tobacco? Didn't know I was due for a good deed! Why, that's right kind of you, going out of your way to give an old stranger some of your tobacco! Pull up a chair, son, let's give this tobacco of yours a day in court. Being free, I bet we'll come to a favorable verdict."