Have you ever tried using a Slip 'N Slide when there wasn't enough water on it? It's painful. And there's a video online of a little girl who found out the hard way.

Right after her mom said it might not be slippery yet, she ran across the yard and tried to slide on her knees. But as soon as her skin hit the plastic she STUCK, and got thrown face-first into the ground. All her mom could do was laugh.

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