The hashtag #charliecharliechallenge has, over the weekend, spiked on Twitter - but what does it mean?
Well, it refers to a traditional game from Mexico, which sees you attempt to contact the spirit of a boy named Charlie, who tragically died after committing suicide.
And it seems as if teenagers everywhere have become obsessed with it.
According to the website Scary For Kids, this is how the game is played:
To end the game, you must chant the phrase ‘Charlie, Charlie, can we stop?’.
If the pencils move to ‘YES’, you must say ‘goodbye’ and remove the pencils to break contact. If the pencils move to ‘NO’, you must keep asking to stop until they move to ‘YES’.
While the game seems harmless enough, some have revealed that they fear the ritual is dangerous.
Father Stephen McCarthy wrote an open letter to the pupils of Saints John Neumann and Mario Goretti Catholic High School in Philadelphia, America, begging them NOT to play the game, as they risk inviting a demon into their homes.
The letter, which was shared on Twitter, read: "There is a dangerous game going around on social media which openly encourages impressionable young people to summon demons.
"I want to remind you all there is no such thing as 'innocently playing with demons'.
"Please be sure to NOT participate and encourage others to avoid participation as well.
"The problem with opening yourself up to demonic activity is that it opens a window of possibilities which is not easily closed."
Would YOU ever attempt to play the demon-summoning game for yourself? And, more importantly, would you be concerned if your children attempted the #CharlieCharlieChallenge?
Let us know via the comments box below now.
GHOSTS CAUGHT ON CAMERA: CCCTV FOOTAGE OF REAL-LIFE SPOOKS
Ghosts caught on camera: CCTV footage of real-life spooks
1 of 12The Mirror Ghost - Unknown
This video begins sweetly enough, focusing on a little girl as she does her hair in a big dressing room mirror.But, towards the end of the video, something seriously disturbing happens - because, as the little girl turns away, a black-eyed little doppelgänger continues to stare out the glass at her.Watch it for yourself here.
2 of 12The Glass-Shattering Ghost - UK
When the owners of Barnsley Antiques Centre found a glass cabinet smashed over their floor, they assumed that someone had broken in.But, when they checked their CCTV, they watched in horror as the cabinet shattered all by itself in the empty room.Watch the footage for yourself here.
3 of 12The Killer Ghost - USA
This unnerving elevator surveillance tape, that records a young woman’s strange behaviour in an elevator, has been claimed by many to show proof of ghosts.Why? Because it features the last few moments of Elisa Lam's life. Her body was discovered in the rooftop water tank two weeks later, after guests complained that their water 'tasted funny' and was a strange colour.The rooftop was alarmed, the tank was 8-foot-high, and she managed to close the heavy lid after herself, despite the fact workers had to cut it open with tools to remove her body.Many paranormal investigators have claimed that this - along with the frightening footage - proves that Elisa's death was caused by supernatural forces.Watch it for yourself here.
4 of 12The Police Station Ghost - USA
Officer Karl Romero based in New Mexico, was stationed in the surveillance room monitoring the CCTV cameras when he noticed some spooky goings-on in the gated area.He claimed he spotted a phantom-like creature gliding across the sally port (a controlled entryway which is completely sealed off).And the CCTV cameras have captured the moment the blurry whitish figure appeared.Check it out here - the ghost appears at 0:30.
5 of 12The Pub Ghost - UK
Ye Olde Man and Scythe in Manchester is thought to be 'Britain's most haunted pub'.And now a new video, which has captured a ghostly apparition in the Bolton boozer, has left the pub manager 'convinced' the premises is haunted.The footage, shot by a Portuguese visitor to the area, sees a strange flickering light at the window of the 763-year-old pub.Check it out here.
6 of 12The Pub Ghost (Part 2) - UK
Speaking of the Ye Olde Man And Scythe pub, that's not the only footage they have of ghosts in their boozer!Speaking with the Manchester Evening News, pub manager Tony Dooley said: "I came down and saw a glass smashed on the floor so I was instantly suspicious and went to check the CCTV and found it has stopped working."We checked the footage and it revealed this figure.""To be honest I was a bit concerned - I'm a bit of a sceptic when it comes to ghosts but you become more of a believer when you see things like that."Watch the footage for yourself here.
7 of 12The Motorway Ghost - USA
This 47-second clip, uploaded to the video sharing website YouTube, begins with footage of a man walking down a darkened street in the American town of Jackson, Wyoming.But, as he walks past a sign for Rocky Mountain Bar, something strange begins to happen - and the man's body begins to fade into nothingness.Stranger still, as his body slowly lets into the air around him, his feet are replaced by two white strange white dots - which continue to move across the screen before disappearing entirely.Check it out here if you don't believe us!
8 of 12The Football-Loving Ghost - Argentina
In this strange video, a ghostly figure can be spotted jogging around the field on camera during the match between Racing and River Plate. The ghost is seen going back and forth at the football stadium while the match is going on.Check out the footage here.
9 of 12The Blockbuster Ghost - Mexico
Employees of a BlockBuster movie-rental store in Mexico have often spoken out about the strange things that occur there late at nigh.From being touched on the back of the neck, to feeling breath in their ears, to watching the flickering of lights, there's not been any video evidence to back up their claims.Until NOW, that is. Watch it here - you couldn't pay us to work in this store!
10 of 12The Chair-Stacking Ghost - USA
In this video, terrified home owner Philip Shapiro can be seen catching the 'poltergeist' terrorising his home on video tape. Philip was instructed by paranormal expert Dr Von Koeslter to document any natural phenomenon occurring in his home - and decided to do so by walking through his kitchen with a camera.However, as soon as he leaves the room to go upstairs, he begins hearing strange noises and rushes back down - only to discover the spook has been stacking chairs.Watch it for yourself here - do you believe?
11 of 12The Ghost Children - USA
As Joey quite rightly states in Friends, there's nothing scarier than a creepy child ghost.So spare a thought for this couple, who were horrified to discover - using hidden cameras - that they had at least TWO ghost children hiding out in their basement.The creepy footage shows a collection of toys moving by themselves in a darkened basement, and it certainly gave us the chills.You can view it for yourself here.
12 of 12The Disneyland Ghost - USA
It's the happiest place on Earth, apparently - so it makes sense that ghosts would want to stick around and beat the queues at Disneyland when they reach the afterlife.This creepy footage shows a spooky figure wandering through the park late at night, looking oddly translucent on the CCTV cameras.And, yes, before you ask, several people have died in the popular amusement park - and nearly all in gruesome circumstances.Watch the footage and decided for yourself here.