what episode does rick and morty bury themselves
Rick Potion No. 9 Hiding from the infected population in the desert, Rick makes a third serum to try and undo all the previous ones. But as the serum was amalgamated from various DNA sources ("Koala mixed with rattlesnake, chimpanzee, cactus, shark, golden retriever, and just a smidge of dinosaur," in Rick's own description), it only further mutates the world's population into barely humanoid blobs. Dubbing the monstrosities "Cronenbergs" (a reference to famous director of body horror films David Cronenberg), Rick decides the situation is beyond repair; rather than make another attempt to fix the world, he instead finds another dimension in which two specific events occurred: an alternate version of himself and Morty successfully created a working antidote and turned everything back to normal, and also died soon afterwards. Rick and Morty enter the new reality, the latter visibly traumatized by the transpired events and his counterpart's gruesome death, and they bury their alternate selves in the backyard before quietly assuming their place, leaving no one but themselves with the knowledge of what has actually occurred, ending with the song "Look on Down from the Bridge" by Mazzy Star.