Own a piece of the good ole fashioned Griswold family Christmas with this Thomas Kinkade National Lampoon’s Christmas Vacation Painting Heat Reveal Ceramic (coffee ,tea, and hot chocolate)  Mug. This collectible mug features Thomas Kinkade Studios’ National Lampoon’s Christmas Vacation done in Kinkade’s instantly recognizable, luminous style. The exterior of this officially licensed mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors. While this mug may be used in the dishwasher or microwave, for the longest lasting and highest quality product, Morphing Mugs™ strongly recommend against it.