I watched the commercial on TV for the Halloween Whopper and I really had no intrest in trying it until now.

Just so you know, Burger King has been selling a Whopper with a black bun for years in other countries, and people asked them to bring it to America. So they finally caved and introduced it as a special Halloween burger this year.

Some people are finding there's a weird side effect of the black bun on the Halloween Whopper, it's turning their poop green.

People are complaining on all forms of social media and even sharing photos of their green poop. We accidentally looked at one and would strongly advise you do not. Again do not do it.

The ingredients for the bun include A1 steak sauce and four different food colorings, so somehow they're teaming up to have this side effect for some people.

Fortunately there's almost no chance the green poop is a sign of any real health problems. Once the bun is out of your system you'll be back to normal, hopefully.

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