Trey Parker and Matt Stone are ready to unleash their first Broadway musical, The Book of Mormon, which opens at Broadway's Eugene O'Neill Theatre on March 24. The South Park duo headed over to Late Night With Jimmy Fallon on March 23 to tell the always excited chat show host all about Mormon's long journey to the Great White Way. Fallon, who proclaims himself a huge fan of their hit movie Team America: World Police, wanted to know why the team didn't decide to use marionettes for the musical. Their simple answer: "Puppets suck!" Click below to listen to more of Parker and Stone's wisecracks.