TikTok trends typically involve dances and filters, but sometimes, dangerous challenges emerge on the platform, as people can gamble with pranks and stunts in the

TikTok is full of entertaining cat videos, humorous dances, and yes, even challenges -- the famed ice-bucket challenge has returned and is promoting mental-health support. But now a dangerous TikTok challenge is spreading through the short-form video app and through schools across the US.