All week, people have been talking about Rihanna's recent unhinged behavior, which, most notably, includes a major affinity for marijuana. Sure, the advent of Instagram has allowed the pop superstar to take her exhibitionism to the next level, but the truth is, RiRi has been smoking trees for a while. From hotel drama to vacation blunts, here's a quick look at the history of Rihanna's relationship with weed.