Let me give you a real quick crash course in the #CharlieCharlieChallenge that's become so popular with kids in the past few days. So, there's this Mexican demon named Charlie (yes, demonic spirits do apparently adhere to humanity's political boundaries). You can summon him from the spirit world by balancing a one pencil on top of another over a simple four-part grid with the words "yes" and "no" in the quadrants, and then saying something along the lines of "Charlie, Charlie, are you here?" Once the supernatural force of evil is in the room with you, it will communicate with you by gently nudging one of the pencils toward either "yes" or "no." Needless to say, it's some exceedingly dark magic, and it's more than a little dangerous.
Or, it would be if it were real. Or if demons were real. Or if anything at all supernatural was real. But none of it is, so this is really just a demonstration of the effects of gravity upon some pencils. It's no more of a threat to your well-being than saying "Bloody Mary" into the mirror, placing your hands upon a Ouija board or staring intently at a photograph of Donatella Versace—they're mildly spooky things to do, but ultimately harmless.