Burger King: Stunt Marketing
In 2018, Burger King used geofencing to offer a one-cent Whopper, but only to customers standing within 600 feet of a McDonald's. The Whopper Detour drove rivals' foot traffic, sent BK's app to the top of the charts, and generated earned media a paid budget could never buy. Two years later the Moldy Whopper showed a burger decomposing over 34 days to advertise the removal of preservatives. Gross, newsworthy, effective.
For founders and operators, this is a case about the attention no media spend can purchase, and the precise conditions under which a provocative move lands instead of looking desperate. It sharpens the judgment call of whether your brand has earned the right to pull a stunt, and what separates a story reporters want to cover from one they will ignore.
Frequently asked questions
What was Burger King's Whopper Detour campaign?
The Whopper Detour was a 2018 Burger King promotion that used geofencing to offer a one-cent Whopper, but only to customers standing within 600 feet of a McDonald's. It pulled rivals' foot traffic toward Burger King, sent the BK app to the top of the charts, and generated earned media a paid budget could never buy.
What was Burger King's Moldy Whopper ad?
The Moldy Whopper was a 2020 campaign that showed a Whopper decomposing over 34 days to advertise that Burger King had removed artificial preservatives. It was deliberately gross and newsworthy, and it proved effective precisely because it was the kind of image reporters and viewers could not ignore.
Why did Burger King's stunt marketing work?
It worked because both stunts captured attention that no media spend can purchase, and they were built on the precise conditions under which a provocative move lands instead of looking desperate. Each one gave reporters a story worth covering rather than a promotion to skip, leaning on Burger King's standing as a challenger to McDonald's.
What can marketers learn from Burger King's stunts?
The lesson is to judge whether your brand has earned the right to pull a stunt, and to understand what separates a story reporters want to cover from one they will ignore. A provocative move only pays off when it fits the brand's position and gives the press a genuine hook. CaseBook turns this into a move you apply to your own company, with an AI coach that reads your answer.