Rihanna denies cocaine usage

This video of Rihanna supposedly showing her doing a line of cocaine went viral yesterday. Today, Rihanna shot down those accusations by saying "N"a your lame ass got some f"g nerve!!!" the 27-year-old wrote. "Any fool could see that's a joint that I'm basing with cigarette! Who snorts tobacco??!! FOH witcho 'never been to a rodeo so someone squeezing their nose means they're doing coke' lookin ass!!"

What do you think? Is she covering up for what she was really doing or is she telling the truth? Check out the original video below.