People's horror of utility bills has been a trending topic on social media in Brazil recently, so for Halloween this year, Burger King has attempted to tap into this "fear." We sent a discount voucher disguised as a utility bill to 10,000 fans. People could also view the "Whopper Bill" online and send it to their friends as a prank. By accessing the QR code with a smartphone camera, people can redeem the bills for half price discount vouchers for a Whopper combo.