The Other Family Human and I were driving around this afternoon when she saw a truck with a sign on its side which read, "We Deliver AAA Batteries". The OFH commented that she wondered who was lazy enough and wealthy enough to have triple-A batteries for their appliances delivered to their home, and how many would a person need to require delivery, and why just triple-A and not double-A or C or D, not to mention 9-volt.
I reflected upon the problem and suggested that AAA stood for American Automobile Association, that the truck probably delivered car batteries, and the reason that they needed to be delivered is that if your car won't start you can't get to the store to buy one. The Other Family Human agreed that that was probably the explanation, although we both preferred her first impression. But you must certainly agree that it was a mistake that anyone could have made.