J.K. Rowling Makes Mistakes, Too

We’re not about to shatter your image of the grand J.K. Rowling (Harry Potter), because the mistake she made on Twitter was small and understandable but worth mentioning.

WATCH: The Vikings: Myth vs. Fact

When you think of the Vikings, do you envision savage brutes wielding swords and shields while wearing helmets with pointy horns? Well, part of that is true.