Bill Irwin and David Shiner’s new comedy Old Hats is currently delighting audiences at the Pershing Square Signature Center, and we’ve got a look at their silly antics in a trailer for the world premiere production. Directed by Tina Landau and featuring music by Nellie McKay, Old Hats is the first collaboration between clowning duo Irwin and Shiner since their Broadway hit Fool Moon. Click below to see these hilarious partners up to their old tricks (and new ones, too!) then catch Old Hats off-Broadway through April 14!