Rihanna had a very interesting message for her followers on Twitter this week: "school. kills."

It came in the form of a caption on a photo she posted of her lower half, with her hand touching... herself.

She's wearing a wrap/skirt thing of some sort (I'm not a fashion person, get over it), that has words like "role model" and "shady" on it as well as cigarettes and weed. 

Oh RiRi, you really area bad girl.

Check out the pic below!

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