The Jam Jr. crew—Sam Hurley, Gavin Magnus, and Coco Quinn—stopped by for a holiday version of lyric challenge. They guessed the lyrics to all our favorite Christmas songs, like "It's Beginning to Look a Lot Like Christmas," "Jingle Bell Rock," Ariana Grande's "Santa Tell Me," and more. Can Coco and Gavin PLEASE do a duet of "Last Christmas"?!