"Rocket Horse & Jet Chicken" is the 4th episode of Season 9 and the 114th overall of Aqua Something You Know Whatever.
Meatwad shares his comic book entitled The Venturesome Ventures of Rocket Horse & Jet Chicken with Shake and Frylock, where Meatwad goes to meet his hero, Jet Chicken, and his trusty sidekick, Rocket Horse at a car dealership promotion. They go to a house where Jet Chicken reveals to Meatwad is the home of his doctor, who botched a surgery on him because he was drunk. At first, Jet Chicken tries to get revenge by taking a dump in his car and his lawn, but he answers the door. So, the doctor agrees to perform surgery on him again, however, Jet Chicken shoots the doctor in a drunken rage, leaving Meatwad having to perform his operation. Though Meatwad fails at performing surgery on Jet Chicken, killing him. Rocket Horse attempts to then kill Meatwad, but after failing at doing that, decides to go on a roller-coaster with him all night until the CIA and FBI and Spec Ops stop it because they are wanted for killing Jet Chicken surgically. After reading the story to Shake, he asks if it is copyrighted. Meatwad doesn't know what this means so Shake takes the opportunity to fly to L.A. and finance Meatwad's idea.
- Master Shake
- Rocket Horse
- Jet Chicken
- Jerry (mentioned only) [Not to be confused with the other Jerry]
- Executive at [adult swim]
- An unnamed doctor is killed by Jet Chicken.
- Jet Chicken is killed after his surgery performed by Meatwad failed.
- Meatwad's full graphic novel title is "The Venturesome Ventures of Rocket Horse & Jet Chicken."
- The [adult swim] official listing note this episode title as just "Rocket Horse Jet Chicken".
- George Lowe guest stars, providing the voice for Jet Chicken.
- Kyle Kinane guest stars, providing the voice of Doctor.
- Brett Gelman guest stars, providing the voice of Rocket Horse.
- This is the first episode to show the extended Aqua Something You Know Whatever opening, with Schoolly D's narration at the start.
- The Hollywood studio room from One Hundred is revisited, but in the background the words read out [adult swim].
- The animation in Meatwad's comic is slightly reminiscent of 12 oz. Mouse and Squidbillies.
- Carl is not in this episode.
- A poster for Loiter Squad appears in the background of the Adult Swim studio.