Jimmy Fallon and Melissa McCarthy went head-to-head on "The Tonight Show" on Monday and wow: These two are lip-sync battle masters!

Fallon first performed "Brand New Key" by Melanie, then McCarthy hit back hard with DMX's "X Gon' Give It To Ya." Fallon got down on the ground for a rendition of Zayn Malik's "Pillowtalk" and then McCarthy really slayed with "Colors of the Wind," from 1995's "Pocahontas."

Who do you think won? We're going with Fallon, by a hair.

Lip-sync battle has been a Fallon mainstay since John Krasinski introduced it and was spun off into its own show on the Spike network in 2015 with hosts LL Cool J and Chrissy Teigen.