The professor is bored being old and decides to switch bodies with his intern, Amy. When they get tired of the game they decide to switch back, only to discover its not possible to swap with the same person twice. Bender agrees to swap between them to get everyone back in order, but only after he commits the perfect crime.
Did You Know?
The title card "What happens in Cygnus X-1, stays in Cygnus X-1" is correct. Cygnus X-1 is a black hole from which nothing escapes. See more
Amy, inside Leela's body, made Leela obese, but in the closing minutes of the episode, Leela's body is thin again without any explanation. The same for the professor's body, which Amy porked up. See more
[Watching Amy eat in Leela's body, which is now obese
Sweet orca of Majorca! You make Fat Albert look like Regular Albert!
I know! But I can't help myself.
Here, put your mind in my body.
No! I'll ruin your body too!
Three decades of the munchies beat you to it.