This 80sTees.com exclusive Christmas Vacation knitted sweater is designed with snowflakes and Christmas trees. The front of the sweater reads I Don't Know, Margo. The back of the sweater features an image of Marty Moose wearing a Santa Claus hat.

While hanging from his house's gutter, Clark Griswold sent ice flying through his neighbors' window. After seeing the broken window, the Griswolds' neighbor Margo asked her husband Todd why the carpet was all wet. Todd responded with the quote that appears on this t-shirt, "I Don't Know Margo."

Everyone will know you are a fan of the 1989 classic starring Chevy Chase when you wear this 80sTees.com exclusive I Don't Know Margo Christmas Vacation Knitted Sweater!