Hide My Peanuts?

I didn't know how to react to this.. On my way to pick up a group of kids at a school today, I picked up a small bag of peanuts. As I was talking to some of the boys, one of the girls, in grade three, came over, put her hand in front of the bag, and said, "Hey, you're not supposed to show off your peanuts in public". What????? What in the world am I supposed to say to that? Seriously, what would you have said? And I didn't have the luxury of having time to think about it. So first impression, what would you have said?