A while ago, I called up Papa John’s and ordered a couple pizzas. I told the person on the line that I had a buy one, get one free coupon. Shortly before the delivery driver got here, though, I realized that I had lost the flier with the coupon on it. Fortunately, the driver never asked for the coupon.

That was when I realized that I’d never once had a delivery driver ask me for a coupon.

Ever since then, I’ve always ordered pizza saying that I have a buy one, get one coupon–and no one has ever called me on it. I’ve gotten six or seven free pizzas this way.