Chapman University students decided to join in on the latest TikTok trend by surprising their professor, who they refer to as Doc. Brown, with a show of gratitude during their online class.
His heartfelt reaction went viral with more than 20 million views — even resonating with celebrities like Reese Witherspoon and Lizzo.
Kimberly Cheng reports for the KTLA 5 News at 10 on Dec. 11, 2020.