In the scene in which Curly is hit on the head with a rubber hammer when he is stuck in the sweater, if you look closely, Larry cracks up and laughs at the last BONK! on Curly's head. When Curly says, "Don't mind ME! DON'T MIND ME!!" He stares up at Moe, in which Moe starts to crack up as well and hides his face from the camera. Then the scene is cut to a close up.