Susan and Mary Test
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Susan and Mary Test (the Test sisters) are characters from the TV series Johnny Test. They're scientists who run a lab in their own house, and provide their younger brother Johnny (the main character) gadgets and formulas to help him save the day, or sometimes problems are caused by their scientific experiments.

Both Susan and Mary are ticklish on their feet and under their arms.

Notable moments Edit

The Tickler Edit

  • In this episode, the villain known as the Tickler captures Susan and Mary and traps them in machines that use feathers to tickle torture them on their feet.

Unknown episode Edit

  • Susan and Mary are mutated, and at one point are holding their crush Gil up in the air. To get them to let go, Johnny and his talking dog Dukey tickle Susan and Mary under their arms with feathers, causing them to let Gil go.