Bar codes.

Today, we went to Target. My son had an epiphany.
He asked why everything always has those little black lines on it.
I told him they are called bar codes and that when an item is scanned, it tells the computer how much to charge us for it.
He soaked it all in.
The next time we passed a price checkpoint, he scanned his item.
When we got to the checkout, he said he had already paid for his item.
It was a folder for school.
I explained that the computer at the front of the store is where you pay, the others are just to tell you how much an item costs.
******
A few hours later, we made a quick trip to Wal-Mart to pick up a 3-liter of soda for a Labor Day party we were invited to.
(He always likes to hold on to the receipt after I pay for something.)
He was in the back seat and I heard a little faint voice get louder and more gruff.
He said, "There's those little black lines on the receipt."
And he added, indignantly, "You shouldn't have to PAY for the receipt. That's NOT FAIR!!"
******
I just love it when he's cute and smart at the same time!