S4, E21: When Beth's vacation leaves Lisa as the only woman at the office, her co-workers soon start treating her just like one of the guys. When she gets someone to fill while Beth is away, the men suddenly reverse their loutish behavior. But Lisa's reaction ends up scaring their temp away. Meanwhile, Bill is offended when Dave hires a voice actor for some new commercials. After declaring the building a historic landmark, Jimmy tries to take advantage of a generous tax loophole by providing guided tours. As the tours disrupt work at the station, Bill lobbies for the chance at the new commercials. But once Dave and Jimmy hear the actor they hired in action, they're convinced they made the right choice. Although reluctant after what she's already seen, Lisa joins everyone in the break room where the men are holding a very proper and civilized tea party. While sure that they are simply mocking her, Lisa fails to realize that the tea party is a regular Wednesday afternoon affair. Finally, with Bill depressed over not getting the job, Dave enlists his colleagues at the station in an effort to lift his spirits. But he's taken aback when Bill turns his harsh imitation against him.