In the season 2 episode "Dead Man's Party" Cordy and Oz are hiding in a closet under the stairs while the fighting is going on, eventually it gets quiet and they sneak out. Oz opens the door when he sees that it's safe he steps out and motions for Cordy to follow, when the camera cuts back to the view from inside the closet as Cordy is stepping out you can see that Oz is still standing, holding the door open and hasn't stepped out yet.