Rick and Morty - Season 3 Episode 100 -

The short, created by Michael Cusack, was like an alternate-universe version of the hit animated series, featuring Rick and Morty down in Australia (or, "the bush dimension") on a journey to find a green cube. Though the show's official Twitter page implied that the short would be an actual episode of the show, it turned out to be an oddball April Fool's parody.