The Adventures of Jimmy Neutron: Boy Genius, Season 3

Evil Jimmy:
While the dork's away, the clones will play, eh, pooch?

[Goddard whimpers and nods yes]

Jimmy:
You're in big trouble, clone! Step away from that duplicator!

Evil Jimmy:
Sorry, no can do, bro. This goodie-two-shoes town of yours ain't big enough for the both of us.

Jimmy:
Wait- you don't know how dangerous that thing is!

Evil Jimmy:
Oh, I think I do. [starts up his rocket and flies away] Hasta la vista, big-head!

Jimmy:
Don't worry, Goddard. He forgot about my rocket. [jumps in his rocket but as he starts it up, he notices a watermelon clogging up the engine] I really hate that clone.

[Later outside, Jimmy is scrubbing the watermelon off in his rocket's engine]

Hugh:
Hi, Jim-Jam, gettin' ready to visit that new planet in the sky?

Jimmy:
New planet? What new planet? [Hugh points to the planet up in the sky; gasps]

Hugh:
Sure is pretty. In a creepy, steaming kind of way.

Jimmy:
Goddard, deploy telescope. [Goddard activate his telescope and analyzes the planet, revealed to be a cloned Earth; horrified] Oh, no-- he's cloned another Earth! [cut to commercial break and back] My evil clone must've used the Flux Field to clone a duplicate Earth.