Jennifer Lopez appeared on The Tonight Show Starring Jimmy Fallon on Monday, and after chatting about her new film, she played a round of Catchphrase with Jimmy, Anthony Mackie and Steve Higgins. But this wasn't just any ordinary game -- J. Lo's was able to use her famous booty for the final word of the game. "That was the best round of Catchphrase I've ever played in my life!" Fallon said as soon as the game was over. Check out the hilarious clip above!

J. Lo is currently promoting The Boy Next Door, and she also stepped by The Ellen DeGeneres Show for an interview, which airs today. The singer/actress shoots down rumors that she's dating much younger co-star Ryan Guzman, and she also chats about the "cougar" label. I mean, her last boyfriend WAS nearly two decades younger than her!

"I'm not after younger guys. If younger guys like me then that’s one thing," she said. "There’s like guys who just go after younger women. They have no name. No label. And you can date one person. Label." She's got a point!