Petey is irritated with Li’l Petey’s constant jokes. Suddenly, the Robo-Brontosaurus appears behind them, manned by Piggy, Crunky, and Bub, who are calling themselves The Fleas. Sarah Hatoff, a determined journalist, stands on the Robo-Brontosaurus interviewing The Fleas; Crunky and Bub observe that they don’t like the name The Fleas, which stands for Fuzzy Little Evil Animal Squad. Piggy angrily tells them that they have to stick with the name, as he has already ordered merchandise with The Fleas printed on it.

Meanwhile, Chief and Milly pursue the criminals. Using the Robo-Brontosaurus, Piggy grabs Sarah, Chief, and Milly in a claw hand. Petey and Li’l Petey, who have been running from the pursuing Robo-Brontosaurus, jump into a sewer drain to escape the stomping foot of the machine. Petey helps Li’l Petey through a series of sewage pipes and tunnels, and they emerge to a quiet stretch of road. Petey tells Li’l Petey, whose knock-knock jokes always involve the object in question pooping on someone’s head, about the structure of knock-knock jokes, which subvert expectations and should not be so repetitive.