You will Watch Phineas and Ferb Season 3 Episode 5 online for free episodes with HQ / high quality. Stream cartoons Phineas and Ferb Episode 66 Ask a Foolish Question. Phineas and Ferb invent a supercomputer that can answer anything – even the toughest and most foolish of complicated questions, words, puzzles and ideas. However, Candace discovers this and tries to use the computer to help her bust her brothers. Meanwhile, Dr. Doofenshmirtz loses his key to his All Purpose-Inator, and the supercomputer has it.
Candace takes Perry to the Charity Pet Wash with her, preventing him from learning about Doofenshmirtz’s newest evil plan. However, another platypus that escapes from the zoo accidentally completes his mission for him. Phineas and Ferb turn their house into a fun house.