Johnny Test
Young Johnny is gung-ho and full of courage. Johnny's brainiac twin sisters, Susan and Mary, use Johnny as their guinea pig for their outrageous scientific experiments. If they can dream it up, Johnny will do it; as long as his genetically engineered super dog, Dukey, can come along.
Season 4 · Episode 50 ·
Johnny Lock Down
Johnny is determined to get a flytrap plant from his sisters for his school's science fair.
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Episode 50 of season 4 of Johnny Test: “Johnny Lock Down”. Aired 2010-11-22. Watch it online free on ZapFlix.