- All Women Love Shoes: Doofenshmirtz tries to take advantage of this stereotype when fighting Perry who is in Candace's body. He tries to distract him (her?) by saying "Look, a shoe sale!" before running away. Oddly enough, it works.
- Animal Gender-Bender: Candace (in Perry's body) "sweats milk".
- Baleful Polymorph: Candace gets turned into a platypus.
- "Freaky Friday" Flip: Perry and Candace switched bodies because of the teleportation device.
- Talking Animal: Candace when she switched bodies with Perry (the Platypus).
- Teleporter Accident: How the A-plot came about.
- Wouldn't Hit a Girl/Even Evil Has Standards: Dr. Doofenshmirtz refuses to fight Perry in Candace's body because of this.