CNN  —  Ahead of “ Saturday Night Live’s ” holiday episode, a performance on the show by Adam Sandler 30 years ago is still bringing the “funukah.” Co-written by “SNL” writers Ian Maxtone-Graham and Lew Morton, Sandler first debuted “ The Chanukah Song ” during a Weekend Update segment on December 3, 1994, expressing his perplexity about why there were so few songs about the Jewish festival of light. Over the years, the comical tune became part of the holiday season cannon. It has been updated