Burger King has debuted a Halloween themed Whopper this year.
Yes. It's black and this is one of the more appetizing images I've found. Some who have tried this blackened awfulness have found their poop turns green. From the Huffington Post-"People who eat the Halloween Whopper say it goes in one color...and comes out another."
Quote from one who tried it, "Took like three days for my poop to stop being green, but was totally worth it."