Phineas and Ferb build a collar device, so Perry can talk, but it doesn't go well. Also, Perry nearly tells them that he is a secret agent.


Perry nearly talks in this special, but in the crossover film of Ed, Edd, 'n Eddy, and Phineas and Ferb. Dr. Doofenshmirtz dreams it after Perry knocks him down, and Wilfred farted on him.

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