This National Lampoon's Christmas Vacation t-shirt shows Clark W. Griswold smiling while wearing a Santa Claus hat. This shirt reads Merry Christmas Kiss My Ass. Clark Griswold was working on a non-nutritive cereal varnish and his boss demanded a brief summary he needed by the end of the day. While Clark's boss and some associates walked by, Clark said, "Merry Christmas, kiss my ass, kiss his ass, kiss your ass, happy Hanukkah". For any fan of the 1989 classic Christmas Vacation, this Clark Griswold Kiss My Ass t-shirt is a must have!