Barcode
It was the blonde's first day at her new job as a cashier at the local grocers.
When checking out with just a few items, a customer placed one of those order dividers, that they keep by the cash register, between his things and the items from the woman behind him in line so they wouldn't get mixed.
After the blonde had scanned all of his items, she picked up the divider and began looking it carefully over.
Obviously, she had been looking for a barcode and upon not finding one, she asked, "Do you know how much this is?"