This 80sTees.com exclusive Christmas Vacation t-shirt features an image of Marty Moose's head wearing a Santa Claus hat. Marty Moose was first introduced as the mascot for Walley World in the 1983 classic National Lampoon's Vacation. In the 1989 holiday classic Christmas Vacation, Clark W. Griswold was seen drinking out of a Marty Moose mug. National Lampoon's Christmas Vacation is one of the most popular Christmas movies of all time. Everyone will immediately know that you are a fan when you wear this 80sTees.com exclusive Moose Head With Santa Claus Hat Christmas Vacation T-Shirt!