This week’s episode of CBS Television’s hit comedy, The Big Bang Theory, opens with Leonard and Penny playing a game created by Sheldon. It’s a totally nerdy game that is so not fun that Leonard immediately jumps to find an excuse not to play again at a later date when offered by Sheldon. He turns to Penny for a reason why they can’t play the game on that certain date only to find that Penny really does have plans that day to pickup an ex-boyfriend and help him move into her apartment, temporarily, of course.

Surprised and shocked by the news, Leonard is not at all happy with the idea of an ex-boyfriend who Penny used to have sex with coming to live in her apartment until he can find work in the area.

Penny thinks it’s no big deal that she wants help out an old friend, who happens to be a musician, and doesn’t understand why Leonard would have a problem with it.

As the two continue to argue about the matter of her ex-boyfriend moving in we come to learn that Sheldon has childhood issues revolving around his own parents’ constant arguing. Sheldon, in one of the funnier parts of the show, even goes to Penny’s job in an attempt to get her to crawl back and apologize to Leonard because it is making his life so unbearable, but she refuses to do so.

With everyone arguing around him Sheldon seems to regress back to his childhood in the all-too-familiar comic book store, which forces Penny and Leonard to treat him like a child in order to get him to get off the floor and come home. In the end the whole situation works its way out in the always strange, but comedic style that makes The Big Bang Theory such a good sitcom.