"Real" Money

I realized something funny today - I mean a real sign of the times. My four-year-old does not know what "real" money is! We were sitting on the side porch and she was riding her bike in circles in front of where I was sitting. As she passed in front of me, she stopped and asked for gas. I pretended to take a gas nozzle and pump gas into the side of her bike, then put the pretend pump back in its pretend holster. She started to ride off, and I stopped her and told her she hadn't paid for her gas. I held out my left hand for the pretend money she should give me. She immediately said, "Oh yeah! Okay!", and got off her bike. As I am holding out my left hand for the "money", she pretends to pull something out of her pocket and then swipes it along my right armpit, punches some imaginary keypad on my right upper arm, takes a pretend receipt out of my right shoulder, and gets back on her bike and leaves. All this time I am left still holding out my left hand....