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Jennifer Lopez is enjoying the spoils after facing off with Jimmy Fallon in a "Tight Pants" battle on "The Tonight Show."  JLo surprised the audience Monday night by popping out from behind the curtain in a pair of skin-tight trousers and celebrating her outfit with a little song and dance. 

Jimmy thought he wore the tight pants better, but with a little Bronx attitude, JLo set scared him straight.  She dropped the cutesy dancing and told Jimmy she wasn't afraid to take off her heels and fight dirty if he didn't "get lost applesauce." 

Check it out below!