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What’s The Creepiest Conspiracy Theory?

K, but is Beyoncé in the Illuminati or not????

Some happenings throughout history are so strange, there seems to be no solid explanation for them.

Luckily, there are some smart people out there who've come up with theories that are so crazy they just might be true.

Maybe you've heard of the Reptilian Elite, shapeshifters who look like people but supposedly want to take over the human race.

Perhaps you know of the Flat Earth Theory, the belief that, you guessed it, the Earth isn't actually round.

Or maybe you've heard of the Phantom Time Hypothesis, which basically says the Early Middle Ages are totally made up and we're actually living in the year 1719.

Conspiracy theories are equal parts cool and terrifying, so tell us, what's your favorite one?

Let us know in the Dropbox below for a chance to be featured in an upcoming BuzzFeed Community post!