If you're on the hunt for the perfect Christmas t-shirt, look no further than the "Are You Serious Clark?" tee. This hilarious quote, made famous by the holiday classic National Lampoon's Christmas Vacation, will have your friends and family LOL-ing at every holiday party. And it's not just funny, it's also super comfortable - made from high-quality materials that will last wash after wash. Trust us, this tee is a holiday wardrobe staple that you won't regret adding to your collection.