Burger King to Sell ‘Stranger Things’-Inspired ‘Upside-Down Whoppers’ In partnership with Netflix, Burger King will start serving an “Upside-Down Whopper” in honor of the the new season of ‘Stranger Things.’ The burger is based on the Upside-Down, an alternative, sinister universe that exists in the popular series. The “Upside-Down Whopper” will be just like a regular Whopper, but served with the bottom of the bun on top of the burger and vice versa. It will also be served in classic Burger King packaging from the mid-1980s. This special burger will be available in various cities across the United States, such as Boston, Miami, New York and Los Angeles, starting on June 21. Items such as Eleven-inspired bleeding ketchup packets and crowns modeled after Dustin's hat will also be available. The promotion also involves DoorDash, with customers able to enter the code “STRANGER” to access a $5 “Hopper Meal.” Customers who used the code will receive access to exclusive content from season three of ‘Stranger Things.’