Young Sheldon has officially joined TikTok just in time for its series finale! The show's TikTok account posted its first video featuring Iain Armitage and Jim Parsons, who narrates the show as adult Sheldon. Jim will be appearing in the series finale alongside Mayim Bialik, and the two Sheldons created a TikTok video to mark the occasion. In the video, Iain tries out an aging filter and then Jim joins in, both hilariously commenting on their appearance. Don't miss the series finale on May 16th at 8pm ET/PT on CBS!