@thecelebcore on Instagram: "This viral clip comes from a press interview with Chris Pratt and Millie Bobby Brown. They are given a simple challenge: laugh without smiling. Both Chris and Millie manage to laugh while keeping their faces straight. No smiling, just controlled laughter. They hold it surprisingly well for several seconds. In the end, Millie breaks first and starts smiling, which ends the challenge. That moment is what made the clip go viral."