Mary finally decided to try the kangaroo potion, to see what hopping was like. When she had nearly finished it she started to feel her shoes get very tight and remembered a little late what huge feet kangaroos have!
She slumped to the floor and tried to tug her shoes off, but they were stuck and getting painfully tighter by the second! While this was happening, the rest of her body was changing, but all Mary was focused on was her poor cramped feet!
Finally her shoes split apart, the bits flying across the room. Mary stared at her now free humongous feet and wriggled her toes. Then she looked at her hands and saw they were pawlike but prehensile. After rubbing her feet better, She looked in the nearby mirror and she was a human sized, fully upright kangaroo. "This is WONDERFUL!" she exclamed. Looking down at her body, she saw she even had a pouch. She hopped on the spot with glee.