In synergy with the third season of the hit Netflix series "Stranger Things", Burger King is selling upside-down Whoppers starting today, retro 1980s packaging included.
If you are not familiar with the show, and without too many spoilers, "Stranger Things" is a science fiction-horror show revolving around teens in the 1980s. If you are not familiar with Burger King, I suppose it's simple enough to say they sell hamburgers. And want to catch up to rival McDonald's.