Burger King Halloween Whopper causes green poop: Black buns dye feces green!

From the "really ewww" news desk, the new Burger King Halloween Whopper causes green poop. CNN reported on Oct. 6 that BK's creepy black buns make feces green according to some folks who've tried it. That's some treat, Burger King. It's more like a scary trick. Folks took to Twitter to announce their surprise at discovering they had green bowel movements after eating Burger King's Halloween Whopper using the hashtag #greenpoop. Have it your way? Not so much.   Burger King Halloween Whopper causes green poop: Black buns dye feces green!