Burger King teases nightmare-inducing Halloween sandwich

    Photo: Burger King<p>{/p}

    WASHINGTON (CIRCA) - Burger King is launching a green-bun sandwich for Halloween called Nightmare King.

    The fast-food giant claims the bun has been scientifically proven to cause nightmares.

    Burger King says it teamed up with Florida Sleep & Neuro Diagnostic Services, Inc. to study the sleep patterns of 100 people who ate the Nightmare Burger before bed.

    “Incidence of nightmares” increased by about 3.5 times for those who ate the Nightmare King before bed, according to a Burger King representative.

    Previous Halloween tinted buns reportedly turned customers' poop bright green.

    Back in 2015, Burger King offered a Halloween Whopper with a black bun, colored with A.1. Sauce.

    The Nightmare King will feature a quarter-pound of flame-grilled beef, a white-meat crispy chicken filet, melted American cheese, thick-cut bacon, mayonnaise and onions.

    The burger is available for a limited time starting Oct. 22.

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