“Who has hair that’s silver and strange?” Unless you answered “Bob Dylan in his ‘Must Be Santa’” video, you probably haven’t seen this 2009 weird-fest. Dylan covered the song — based on a German drinking tune and written in 1960 by Hal Moore and Bill Fredericks — for his Christmas in the Heart album. With its polka flavor and tricky call-and-response storyline, the song is intriguing right through to the end. But it’s the eggnog-fueled video that really grabs my attention. Featuring a wild Christmastime bash, a mysteriously desperate chase scene and Dylan teleporting around the house while looking like the Mad Hatter, it took me three tries to take everything in. See if you can make sense of this chaotic clip.