Weird news: Burger King's Halloween Black Whopper Is Causing Green Poop

Burger King is a rainbow of surprises these days.

The company recently unveiled a black Whopper for Halloween, a version of the chain's signature sandwich served on a dark bun. But people who eat the A.1. Halloween Whopper say it goes in one color... and comes out another.

Took like three days for my poop to stop being green, but was totally worth it, @BurgerKing
— Toasty (@ImHunterStanton) October 5, 2015

#HalloweenWhopper #GreenPoop is a real thing. Don't get to scared after eating it like I did.
— Ryan Skeltis (@RagingSkittlez) October 4, 2015

The company told ABC News that the black bun contains less than 1 percent food dye, and writes in its nutrition facts that the flavorings and food colorings in the bun "are commonly used in the industry and within the safe and Acceptable Daily Intake (ADI) approved by the Food and Drug Administration (FDA)."

It does not specify which colors are used, but Medical Daily reports that green dyes are often used in black food coloring.

Whatever the reason, the emerald-hued number twos have unleashed the #GreenPoop hashtag:

Maybe Burger King should bring the Black Whopper back for St. Patrick's Day? #GreenPoop https://t.co/hLXIvmyHVM
— Kyle Serba (@KyleSerba) October 6, 2015

Am I the only person who thinks the #burgerking #GreenPoop thing is the funniest news thing in actual years? Omg. Lol forever.
— Wiz Corlifa (@laurakcorley) October 6, 2015

@BurgerKing STILL HAVING #GREENPOOP FROM YOUR #HALLOWEENWHOPPER YOU NEED TO RESPOND TO THIS BECAUSE ITS REALLY MESSED UP
— Dr. Pluto A. Planet (@PLUTOAPLANET) October 1, 2015

At the #HalloweenWhopper just to see what the black bun is all about. It was good, but one side effect, #greenPoop the next day
— Jessica (@jessz2cute4u) October 2, 2015

Not everyone is put off by the goblin-green Halloween side effect. In fact, several customers seem to be looking forward to it:

I want to try the Burger King black whopper, for no other reason than seeing my poop turn green. #GreenPoop
— Aaron Saltzman (@amsaltzman) October 6, 2015

don’t rly care how it tastes, I just want that halloween burger from @burgerking for the rad green poop
— Marie Horselamp (@MarieHorselamp) October 5, 2015

One note of caution: Use care when scrolling through the #GreenPoop hashtag as some people are posting visual evidence.

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