Last updated on Tuesday 21 January 2014 at 01:51 UK

Watch Johnny Test Series 1 Episode 10 Online Free

Johnny Test Series 1 Episode 10PLAY

Mr. Teacherman has just told the class they have a huge history test but Johnny has a plan to get out of it. Johnny is testing Susan and Mary's newest invention, Quad "The Magnetizer"; unfortunately he doesn't listen when they tell him not to fool around with it.

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