A strange craze trending on Twitter called the #CharlieCharlieChallenge is generating interest on the Internet, with thousands of youngsters experimenting with the game, which draws inspiration from the Ouija board games of old.

Similar to the “Bloody Mary” urban legend, which involves chanting “Bloody Mary” three times in front of a mirror to summon the evil spirit of Mary, the CharlieCharlieChallenge is reportedly an ancient Mexican tradition where people try to summon an evil Mexican demon named Charlie—“Carlos” would’ve been more appropriate if you asked us.

The “game” involves taking two pencils, placing them on a piece of paper, one on top of the other in a cross shape. Participants must write the words ‘yes’ and ‘no’ on each of the four squares made by the pencils.

If you’re brave enough, you can summon the demon Charlie by reciting, “Charlie, Charlie are you here?” upon which the top pencil rotates, pointing to yes or no.

Participants can then ask the demon all sorts of yes/no questions, but be warned, if you fail to dismiss the demon correctly by chanting, “Charlie, Charlie can we stop?” it will leave the portal to the demon world open for all others to enter your home.

Are you brave enough to take the challenge? Tell us how your game ended up in the comments below.