Want proof that some sorority girls are psychos? Well here it is. Rebecca Martinson wrote this letter to the other members of her Delta Gamma sorority. The letter was then leaked and went viral. The folks at Funny or Die recognized it for what it was and had an actor read it. The actor reading it is the very intense Michael Shannon who not only was in Boardwalk Empire, he's the guy who will be taking on Superman as General Zod. Check it out after the jump.

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Now guys, the language here is filthy and hardcore. That's the point. Remember the whole time, this isn't a mafia bosses manifesto, this is an actual letter that a sorority girl wrote to other members of her sorority. Here you go:

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