Well, this is one way to learn a lesson!
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Mia Simper was eating sunflower seeds on the drive back from her family’s lake house in America when she began throwing the skins out the window.
However, unknown to her, the skins were flying straight back into the car… and right onto her little sisters sleeping face!
Mia, 15, shared the adorable image of her little sister sleeping on Twitter and it’s since been shared thousands of times.
That will teach her to throw things out the window!