

Set on Christmas Eve 1978, the sketch opens with Santa Claus (Jack Black) coming down the chimney of a suburban home to find young Debbie Downer awake. In classic Debbie Downer fashion, she immediately begins pointing out depressing facts and potential dangers, from dust mites in her bed to the risks of drinking unrefrigerated milk. As Santa tries to remain jolly and find the perfect Christmas gift for her, Debbie shoots down every suggestion—My Pretty Pony (Taiwanese child labor), Easy-Bake Oven (suicide risk for her Barbie), and roller skates (injury hazards). Santa increasingly turns to the liquor cabinet as Debbie's relentless negativity wears him down. Eventually, Santa finds the perfect gift: a calendar of medical oddities, which thrills Debbie. The sketch parodies "How the Grinch Stole Christmas" with an animated opening showing Debbie as a green-skinned character set to a song similar to "You're a Mean One, Mr. Grinch." Even as Santa prepares to leave, Debbie warns him about hypothermia, accompanied by her signature "wah wahhhhh" sound effect.
This sketch features a special Christmas-themed opening with Debbie animated as a Grinch-like character, with a narrator singing to the tune of "You're a Mean One, Mister Grinch" with lyrics about Debbie being a downer. The sketch is set specifically on Christmas Eve 1978. Jack Black's performance as Santa was praised by viewers, with many not immediately recognizing him in the role. The recurring "wah wahhhhh" sound effect (made by a muted trombone) follows each of Debbie's depressing comments. This was part of Season 31, which was notable for being the first season broadcast in high-definition.