Though Harry Shearer is still holding strong that he’s done with The Simpsons, the show must go on. With that, we have this Sunday’s finale. And with that, we have a new guest couch gag. This one comes from the fine people behind Rick and Morty, the acclaimed Adult Swim show, co-created by Dan Harmon and Justin Roiland. As Simpsons creator Matt Groening notes in its press release, it “plays like a full-fledged mini-episode.” And, yes, a Shearer-voiced character appears in it.