Fortune Cookie is episode 8a of Season 3 of Rocko's Modern Life.
An elephant is at the Fortune Cookie Inc. building typing fortunes and putting them in the fortune cookies. The next day, at 5:00 a.m., a shark host is outside Filburt's trailer and informs the turtle that he has just been chosen as the contestant of the Mega-Spin show, giving him the nickname "Mr. Lucky." Filburt emerges from his trailer and literally jumps for joy.
Filburt is later seen walking the streets on his own, thinking about what Rocko said. When he is about to agree with what Rocko told him, he views a black cat up ahead and begins to feel nervous. He continues walking and comes across another black cat. So he crosses the street and continues walking on the other side, only to find that there are a number of other black cats following him. Filburt runs into the House of Mirrors to circumvent the cats, only for every glass inside of it to break. He quickly runs outside and is followed by the cats once again. When the bad luck begins to go in his head, everything around him destroys as he walks by.
At a local park, Really Really Big Man convinces a pigeon to gaze into his nipples to see that he still has his life ahead of him. It almost works - that is until Filburt arrives and Really Really Big Man's nipples begin to go out of control due to Filburt's arbitrary bad luck. The pigeon, convinced that it was a trick, tries to "drop the big one" on the superhero. As the superhero's nipples continue to go out of control, they end up stuck to his eyes and he and the rest of the citizens run away. Filburt then arrives at Rocko's house and tells Rocko about all the predicaments he got into earlier. As he explains, he accidentally ends up completely destroying Rocko's house.
Back at Yen-O-Ching, Filburt buys a prolific amount of fortune cookies for Rocko, Heffer, and himself. Rocko is the first to open his fortune cookie, and his fortune says "You are an ultimist at heart and in practice", 'Heffer's fortune says "Enjoy the lighter things in life. Deeper joys may follow", and Filburt's fortune says the same message he read before. When he reads it, he realizes this and opens the other fortune cookies. Unfortunately, for him, every last fortune he reads have the same message. So Heffer comes up with an idea to get the turtle prepared for Mega-Spin.
At Rocko's now-demolished house, Rocko and Heffer are watching the Mega-Spin television game show, where Filburt, now covered with every possible lucky charm, is next to spin the wheel at an attempt to win a new trailer home. As Filburt spins the wheel, the bolt on the middle of the wheel comes off and the wheel ends up rolling out of the building and around O-Town, destroying everything around the city. When the wheel rolls back to Filburt, it stops, and the arrow lands on "win". Filburt becomes delighted that he has won the game show and laughs maniacally as the destroyed city is shown at a distance.