High Quality Content by WIKIPEDIA articles! "Make Room for Lisa" is the sixteenth episode of The Simpsons` tenth season. It first aired on the Fox network in the United States on February 28, 1999. In the episode, while visiting the Smithsonian expedition, Homer Simpson meets a businesswoman who convinces him to build a cell phone tower in the Simpsons house, making it take up Lisa`s room. Lisa is forced to share Bart`s room, but the stress of living in the same room as Bart gives her stomach aches. Homer and Lisa decide to visit a New Age store, where the owner convinces them to go on a spiritual journey by lying in a sensory deprivation tank for a prolonged amount of time.