News Rihanna Sparks Controversy With Pot Pic By Jackie Willis 7:06 AM PST, January 3, 2013 Getty Images Rihanna faced a bit of backlash from her Instagram followers after posting a pic of what looks to be marijuana.The S&M singer, 24, captioned the abstract pic, writing: "This nug look like a skull or am I just....?"With nearly 6,000 comments to the pic and over 9,300 likes, with one reader responding: "Why r u teaching other girls who look up to you to do this?"Hours later, Rihanna posted another message that read: "I don't really give a f***." RELATED: Rihanna and Brown Share Intimate Instagram Pics In Bed What do you think? Should Rihanna be sharing pics of this nature? Let us know, below.