A Christmas Carol couch gag is the 8th couch gag in Season 28. It was used in the episode The Nightmare After Krustmas.
Plot
The Simpsons run to the couch, dressed as characters from A Christmas Carol. (Homer is the Ghost of Christmas Present, Marge is Mrs. Cratchit, Lisa is Martha Cratchit, Maggie is The Ghost of Christmas Future, and Bart is Tiny Tim.) Mr. Burns (dressed as Ebeneezer Scrooge) says "Release the Christmas hounds" and hounds chase them off the couch.