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.

Students are short-circuiting their school-issued Chromebooks by inserting metal objects like paper clips, pencils, and even pennies into the USB ports.