Unless you've been living under a rock, we're willing to wager that you've heard about the insane Facebook event rallying people to storm Area 51.The seemingly jokey call-to-action has reached a whopping 438k "Going" RSVPs, and even more "Interested." Whether you're an alien conspiracy theorist or an internet troll, this content is pretty much irresistible, and the memes are spreading like wildfire. Here are some of our favorites.