By A Mystery Man Writer
Burger King's McDonald's Whopper Deal Among Weirdest Fast-Food Ads
Burger King - Wikipedia
Burger King Whopper available for a penny – if you head to McDonald's
Burger King is selling Whoppers for a penny
Burger King Is Giving Away Free Cheeseburgers for National Cheeseburger Day — How to Snag the Deal
Burger King offering Whoppers for a penny: with a catch
Burger King Offering 1 Cent Whoppers… At McDonald's?
Burger King Whopper is only 1 cent if ordered at McDonald's
Was given this quarter with my change at Burger King. Thanks! : r/pics
Burger King is giving away Whoppers for 1 cent — but you have to go to McDonald's first