There was another one where Ernie locked Bert out. Bert comes home and notices the door is locked. He knocks for Ernie to let him in. When Ernie doesn't answer, he's worried something happened to him. Ernie finally comes to the door and asks him to stay outside for a while. Bert wonders why Ernie would do this. At first he thinks Ernie is sad and calls for Ernie "Don't be sad". Ernie comes to the door and says he's not sad, and then shuts the door on Bert again. Then Bert thinks that Ernie has messed up the apartment and is getting mad. When Ernie finally lets him in, Bert is suprised that the apartment is still clean. Bert asks him why he kept him outside for so long, and all of the sudden, their friends pop up and yell "SURPRISE" because it's a surprise party for Bert.