Jennifer Lopez Performs 'Tight Pants' Song With Jimmy Fallon (Video)

Jennifer Lopez and host Jimmy Fallon during the "Tight Pants" skit on The Tonight Show Starring Jimmy Fallon, June 9, 2014. 
Douglas Gorenstein/NBC

Out promoting her new album "A.K.A.," Jennifer Lopez stopped by "The Tonight Show" and got into a heated sing-off with Jimmy Fallon. The issue? Some very tight white pants.

Fallon prances onstage singing, "No one else around is wearing tight pants," though it soon becomes clear he's not the only one. J-Lo shows up onstage singing a similar tune. After exchanging namedrops like Mayor Barleycorn and Governor Grimble about their rights to wear tight pants, Lopez finally bursts, "Listen up, you little bitch. You better hide your wife, you better hide your kids, because I will cut you! I will cut your father, I will cut your mother, I will scratch you!"

Poor Jimmy! To his credit (and Lopez's too, of course) he does look very good in a pair of tight white pants.

This isn't the first time Fallon has gotten into a scuffle over tight pants-wearing territory. Back in 2012, Fallon got into a similar scuffle with Will Ferrell.