Jennifer Lopez scared the pants off Jimmy Fallon Monday.
The "I Luh Ya Papi" singer stopped by The Tonight Show, where she joined the TV host on stage. Both Lopez, 44, and Fallon, 39, wore a matching pair of tight white pants—much to the comic's dismay.
Before J.Lo appeared beside Fallon, however, the mop-topped jokester sang, "I'm the only one who's got my tight pants / I've got my tight pants / I've got my tight pants on / No one else around is wearing tight pants / I've got my tight pants / I've got my tight pants on." Lopez shimmied in his direction, inciting a mini-dance-off. Then the pop diva sang, "I can swing my arms / I can shake my hips / I can dance down the block knowing I'm the only chick that's wearing tight pants / and I'm the only one."