Brick Joke: At the beginning of the cartoon, Eddy demands a quarter for keeping Jonny out of Kevin's hair, while Kevin only wants to pay a nickel. At the end of the cartoon, Eddy and Jonny are bargaining, with Jonny wanting a quarter to let the Eds out of the box they're stuck in while Eddy stalwartly wants to give him just a nickel, with Jonny raising his price and riling up the animals the Eds are stuck with every time Eddy refuses.
Gone Horribly Right: Eddy's scheme to turn Johnny into the most annoying kid in town ends up working too well, when the episode ends with him begging Johnny to get him out of Rolf's stuffed barn for a nickel and Johnny keeps driving the price up by making his gross-knuckle cracking noise over and over, causing Rolf's animals to keep rioting.
Hell Is That Noise: In-Universe. Jonny cracking his knuckles (and, later, his other body parts) is depicted as the single most sickening noise in the universe.
Jerkass Ball: Jonny towards the end, when the Eds are locked in the cage and crushed by the animals. Jonny decides to extort them and his initial offer is a quarter, even if Eddy is only willing to pay a nickel to get out of the cage. Eddy insists for a nickel, but Jonny keeps raising the price by a quarter each time.
Knuckle Cracking: Jonny does a particularly loud one that scares Rolf's animals.