Cardi B was a guest on The Tonight Show on Wednesday, stopping by the late night show to chat with host Jimmy Fallon. The Bronx rapper proved a charming guest, talking about everything from the origins of her name to her recent engagement to Offset. She also gave a brief plug to her new single "Bartier Cardi," due for release later this week. She explained the simple reason for giving the song that name, saying: "I named it that because I don't want Cartier to sue me." Check out the full interview above.