Content Warning: If you usually let your children listen to your podcast feed with you, you may want to get the kids out of the pool for this one as we dive into a very festive, very inappropriate 2002 episode of the Adult Swim cartoon Sealab 2021 to wage war on the Feast of Alvis.  ****  ? Guests:  Zac Shipley (@zacshipley).  ****  ? Topics & Tangents:  1. Sealab 2020, the very different, very boring original 1972 cartoon that serves as the butt of Sealab 2021’s joke.  2. The usual Sealab theme song by Calamine is absent here to make room in the stable for the story of the birth of Alvis.  3. The Church of Alvis, a blog last updated in 2007 with a cliffhanger, but the faithful still await that day with patience. 4. Alvisism as explained by Sealab Wiki, which also exists.  5. A series of quotes from this episode made into animated gif icons and posted on LiveJournal. This show is a very specific sort of old.  ****  “Sealab 2021” and “Feast of Alvis” ©2002 Cartoon Network.  Full show notes with links at adventcalendar.house.  Say hi on Twitter @adventcalhouse.