Watch the full episode of Phineas and Ferb "Rollercoaster / Candace Loses Her Head!" Phineas and Ferb build the coolest rollercoaster ever in their backyard! On Candace's birthday, the family takes a trip to Mount Rushmore.

Watch the next Phineas and Ferb video here:    • The Backyard Beach Episode| S1 E2 | F...  

Watch Phineas and Ferb on Disney XD! And check out more Phineas and Ferb full episodes here:    • Phineas and Ferb Full Episodes  

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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