In 2017, they fulfilled that promise. Stripping off their pants on their way up to the stage, they accepted the GRAMMY for Best Pop Duo/Group Performance for their hit "Stressed Out" in suit coats and boxers. "Not only is this amazing, but I want everyone at home to know to watch out. You could be next," Joseph quipped. "Because anyone, from anywhere, can do anything — and this is that." For more memorable GRAMMY Rewind moments, visit GRAMMY.com/videos.