Dwayne "The Rock" Johnson and Kevin Hart have kept us cracking up with their chemistry both onscreen and off, and their real-life friendship has resulted in some pretty hilarious moments. On Sunday, Dwayne shared an Instagram video from the set of Jumanji showing him and Kevin shooting a scene that called for the comedian to be harnessed to his back. "We've been up here for a while," Dwayne tells the camera, "Just . . . d*ck in my back." Kevin adds, "I'm giving this guy a major mooseknuckle in the spine." Dwayne captioned the clip, "In real life this is bullsh*t, but we commit to the comedy." Prepare to LOL.