My Sister's a Ninja

I have a little sister whose name is Mary blue-eyed, big smiles, and rarely scary she's only ten, her hair is ginger and secretly, she's a ninja. She recues kittens from tall trees She reads Harry Potter in Chinese She chases villians 'cross the Pyrnees In cross-country skis For extortionate fees At home she's an angel and we watch TV We laugh at Neighbours and then eat tea I steal her hairclips and she steals mine And it's all pretty normal, most of the time She keeps a low profile but never gets bored Though she makes sandwiches with a Samurai sword Simultaneously slaying Mongolian hordes with the sword and a gourd yeah my sister's a ninja, we never get bored (but it's really difficult to get her insured)