Phineas and Ferb (2007)

S3E34 The Remains of the Platypus

Title: The Platypus Paradox Plot: Danville is caught in a whirlwind of chaos, leaving everyone puzzled. The mayhem kicks off when Phineas and Ferb invent Cheesetopia, while Doofenshmirtz turns Perry into his personal assistant using a Butler-inator. Meanwhile, Carl finds himself ensnared by Doof while dressed as a squirrel. The episode of Phineas and Ferb cleverly unfolds in reverse, gradually revealing the hilarious sequence of events that led to this delightful pandemonium.