Which episode?

I remember an episode about a married couple. The problem with their marriage is that the husband can not sleep in a bed because of a prank that was played on him by his devious brother when they were kids. His brother trapped him in one of those couches with a pull-out bed. Near the end of the episode, his brother shows up at the couple's apartment; and with his wife's urging, the husband finally gets revenge on his brother by trapping him in the same type of couch. Once this happens, the husband's fear of beds begins to subside, and for the first time he can finally lay next to his wife in a real bed. Does anyone remember the name of this episode? Any help would be most appreciated. Thanks.