Watch the full episode of Phineas and Ferb "Mom's Birthday Episode / Journey to the Center of Candace!" Phineas and Ferb go out of their way to give mom the best birthday ever. The boys build a shrinking submarine and end up in Candace's stomach!

Watch the next Phineas and Ferb video here:    • Run Away Runway | S1 E12 | Full Episo...  

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Phineas and Ferb invent, scheme, and stay one step ahead of their sister Candace who just wants to catch them up to no good! Their pet platypus Perry lives a double life as a secret agent whose sole mission is to foil Dr. Doofenshmirtz's plans.

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