Phineas And Ferb: Season 3, Episode 29 - ProjectFreeTV

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After Baljeet announces that he is no longer Buford's nerd, a heartbroken Buford accepts Dr. Doofenshmirtz's proposal to help win over the Tri-State Area. The new partnership causes a problem for Perry since he can't reveal himself as Agent P to Doofenshmirtz without Buford seeing him. Meanwhile, Baljeet enlists the boys to help him climb Danville Mountain.