Jimmy Fallon engaged in a fiercely competitive dance battle with Jennifer Lopez on Wednesday.

But The Tonight Show host ended up second best as the pop star totally slayed the washing machine on a spin cycle and hot cowboy routines.

The duo pulled random dance names out of a bag and made up the moves on the spot. When it was obvious that J-Lo was the winner, they joined forces for the seeing yourself on the jumbotron boogie.

See how it played out above.