We've seen plenty of hilarious barbershop-style covers on The Tonight Show Starring Jimmy Fallon — like Kevin Spacey's "Talk Dirty" [1] and Steve Carell's "Sexual Healing" [2] — but when Rihanna [3] comes into play, it's a game-changer. Jimmy enlisted the help of Joseph Gordon-Levitt on Thursday night to sing Rih's "B*tch Better Have My Money," and the result is pretty exceptional. Watch the hilarious video above.