A Volusia County father says he was “absolutely horrified” after seeing video he believes shows his middle-school-aged son attempting the viral “Blackout Challenge,” a dangerous trend that involves cutting off airflow to induce briefly passing out, according to a report from our sister station in Orlando, WKMG.

Seventy percent of teens in the U.S. use TikTok with more than a billion videos viewed per day. But not everything is fun and games. Some viral challenges can be dangerous, even deadly.