Big kid Jack Black joins Jimmy Fallon for ‘Kid Theater’ (video)

Jack Black is basically a nine-year-old with a (terrible) gray beard, so it’s only natural that the actor join Jimmy Fallon for the latest “Tonight Show” “Kid Theater.”

These mini-plays were all themed to Black’s new movie, “The House With a Clock in Its Walls.” Let’s just say they weren’t exactly Shakespeare, and the rap song from the final scene wasn’t quite Eminem.

Watch the video above.