Facepalm: Not for the first time, a social media platform has been forced to warn users not to take part in a challenge that could seriously injure or even kill them. TikTok, the popular app that lets people create 15-second video clips, has said it would remove any content that encourages or replicated the skull-breaker challenge.
The prank, which has mainly been carried out by teens, involves two people tricking someone into standing side-by-side with them before jumping into the air, at








