Will Smith joined Jimmy Fallon on "The Tonight Show" on Thursday, where the two had everyone in the audience dancing as they rapped "It Takes Two" by Rob Base and DJ E-Z Rock.
"We have a lot in common," the late night host told the actor. "We both love music. We like rap music. You're a famous rapper. I'm a classically trained beatboxer."
The "SNL" alum then brought out his iPad and opened an app called Loopy, a recorded layering tool that helps aspiring rappers and artists create musical loops.
Once the beats were ready, the dynamic duo started rapping the lyrics from the classic hip-hop track, replacing them with their own freestyle rendition.
"I wanna rock right now, I'm Will Smith and I'm J-Fall," the two rapped into their microphones. "I'm not internationally known. Me and the Roots come from the same home [Philly]."
See them in action in the clip above ... we're impressed!