Revenge On My Sister?

I have a sister who's been treating me like trash lately. We share a room and always leaves it a mess, and somehow expecting me to clean it. She doesn't know how to respect my belongings by borrowing my clothes (and eventually ruining it, because she's such a fat person), and even wears my shoes (and she's a size bigger than me). And complains heck of a lot!

I want to do something really awful to her. Something that will make her cry so bad, she'll wish she actually had a life.

Suggestions anyone?
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>Towson_Desi: I agree with that you're saying. The thing here is that I've been nothing but nice to her. She always asks me to do stuff for her, like covering her for chores or whenever she wants to go out. I'm not that bratty at all.
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BTW, I was always scolded by my parents because of her. I even got grounded for 2 months because of what SHE did.
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She took (and LOST) my phone charger just now. AAAARRRGGGHH!
Revenge On My Sister?
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