"Rattlestar Ricklactica" is the fifth episode of the fourth season of the Adult Swim animated television series Rick and Morty.
A future Rick and Morty (who sports a black eye) appear with a snake-language book full of instructions on time travel, while also insulting their past selves.
With minutes left on the ray as he is high above ground, Jerry prepares to fall to his death when a jet flies by, to which he attaches himself.
In the post-credits scene, while waiting for their past selves on the snake planet, Rick reminds Morty to stay in the car next time, then punches him in the eye.
[4][5] According to Nielsen Media Research, "Rattlestar Ricklactica" was seen by 1.32 million household viewers in the United States and received a 0.75 rating among the 18–49 adult demographic, making it the lowest rated episode of the series (excluding the unannounced season three premiere) since season one's "M. Night Shaym-Aliens!".
But it's funny as hell, taking a basic premise at once incredibly dumb and clever as fuck, and running it straight into the ground.