I saw a guy try to scam McDonald's yesterday, and he tried to use me to do it! This McDonald's drive through is set up like most, with a speaker where you place your order, then a window where you pay, then a window where you get your food. For some reason, this McD's likes to put a person out by the line to take orders, rather than having you use the speaker. (I'm not sure why. It's a small lot, and he stands about 3 car lengths back from the speaker. This stops the traffic there, and on this day, there was room for at least 6 cars between him and the pay window.)
When I got in line, there were 2 cars ahead of me to order. The first one ordered, then pulled around to the pay window. The second one ordered, then pulled up to the speaker. I order my usual large Diet Dr. Pepper, then heard the guy ahead of me order a large Diet Dr. Pepper at the speaker. He pulled up and paid, then moved to the pickup window. As I pulled up to the pay window, I saw the person at the window hand him a large drink, which he refused. The lady at the pay window told me my total was $7.73. I told her I just had a drink. She looked at my for a second, then ran down the hall to the pickup window. She came back with the other guy's card, cancelled a payment, and then charged a new one. The guy ahead of me had heard my order, duplicated it and paid for a drink. Then he pulled up to the pickup window, refused the drink, and told them what he had actually ordered from the guy in line. Since they had that order ready, they assumed that the orders were in the wrong order, and were about to give him the food. If the cashier hadn't realized so quickly what was happening, he would have been able to take off with the food, while only paying for a drink.