The cashier handed the coupon back to me. "We don't have Whoppers here," she said.
It wasn't until after I asked the poor girl what kind of Burger King doesn't sell Whoppers that I realized that I was at McDonald's.
In moments when I am confronted with my own stupidity, I almost always choose to throw myself off the cliff rather than back away from its edge with my tail between my legs.
In this economy, retailers are doing whatever they can to make a sale; I figured that fast food restaurants would be no exception.
"It's a competitors' coupon," I explained, as I scanned the overhead menu. After a quick ingredient comparison, I decided that I could be just as happy with two quarter-pounders.
The manager was called over to explain to me the difference between the 40% off coupons handed out by national chain craft stores and the item-specific coupons mailed out by individual restaurant franchises.
"Burger King and McDonald's are not the same restaurant," he told me. "Completely different."
I wasn't convinced of the man's claim, but for the sake of my children, who were wondering why it was taking so long to get their food, I chose to take the high road and not pick a fight over hamburgers (feel free to applaud my maturity in the comments).
I was only sort of joking.