The latest Internet craze is a game called the “Charlie Charlie Challenge” that uses two pencils balanced on a sheet of paper to summon an alleged Mexican demon. It’s become so popular that the hashtag #CharlieCharlieChallenge has been tweeted more than 1.8 million times — and the topic has recently spiked in search on Google. People — mostly teens — have been sharing clips of their attempts to summon Charlie the demon by asking “Charlie, Charlie are you here?” and waiting to see if their pencil moves toward the words “yes” or “no” scrawled on the paper.