Plot

Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf to make a sale. Meanwhile, Sheldon and Raj collaborate on an astronomical discovery, and Howard and Bernadette's happiness is short-lived after Stuart moves out.

With Amy away at a convention, Sheldon hangs out with the friend with "the best offer", which happens to be Raj who has time booked in the telescope room searching for rogue planets. While Raj initially regrets asking Sheldon to join him, Sheldon does become a useful participant in the process. However, the successful result of their time may cause further problems down the road for the two of them. Meanwhile, Penny is having problems trying to arrange a business appointment to meet with a psychiatrist named Dr. Gallo. Penny is able to convince Leonard to book an appointment with Dr. Gallo pretending to be a patient to lay the groundwork for getting Penny an appointment. Leonard and Penny's resulting time with Dr. Gallo may have deeper implications than they would have imagined. And just as Howard and Bernadette are beginning the process of remodeling the house, Stuart gives them the news that he has found an apartment and will be moving out. Despite Stuart being a thorn in their sides, Howard and Bernadette may get the feeling of being empty nesters once Stuart is truly gone.—Huggo

Amy is away for the weekend at a NeuroBiology conference and discussing the merits of Best Western motels and Best Buy stores via Skyping with Sheldon. She really does appear to miss him. Sheldon has time on his hands and wants to know what others are doing inquiring who wants to get their "Sheld-on". Howard and Bernadette are cleaning their house. Not interested. Raj is using a telescope to look for new planets, which Sheldon finds interesting. He asks what Leonard is doing and he's having a "Sheld-off" weekend.

Penny comes home complaining that Dr. Gallo (Jane Kaczmarek), the psychiatrist, won't let her pitch her drugs to her. Raj suggests that Leonard might visit her as a patient though he argues that he doesn't have any problems. The guys mention several.

Howard and Bernadette are in Au Naturel after their incredible love making session. Both wish they didn't have to be so quiet since Stuart lived next door. Stuart knocks and they decide to let him in. Since they are going to start remodeling he has found an apartment and is moving out.

While Raj is working on the telescope, Sheldon is bored and keeps asking him what he was doing. When Sheldon was taken to work by his father, he figured out in ten minutes who was taking money out of the register. It was his father and he got him fired. Raj sits in front of a numerical database from six months of observations to look for patterns or anomalies that might indicate a new planet. Sheldon immediately finds a pattern.

Leonard visits Dr. Gallo who immediately asks about Dr. Beverly Hofstadter. Yes, she is his mother. She has read all of his mother's books so Leonard thinks she knows him better than himself. Gallo doesn't agree with Beverly's mention of raising children. He wonders if she finds them cold, cruel and unsuitable for little boys who just want to be happy. Leonard admits that he still sends her mother a greeting card and gift on his birthday because Beverly insists that his birth was her accomplishment. Dr. Gallo says that this is horrible.

Howard and Bernadette are helping Stuart pack his car. Howard mentions that they could now get romantic in any room in the house. Stuart finishes filling his car and wonders if everyone thought he would still be there two years after moving in with Debbie. After Stuart drives off, Howard appears in his underwear ready to have sex in the garage.

Back in the telescope lab, Raj combines all their photographic images and discovers that Sheldon found a new medium-sized asteroid that they hoped would be a trans-Neptunian object or a dwarf planet. First Sheldon calls the discovery "Chicken fingers" until they both admit that they like chicken fingers. Now they get to come up with a name for their new asteroid, one that people can't make fun of like "Uranus".

Leonard returns home feeling great about his talk with Dr. Gallo. Leonard has always been insecure that he didn't feel that people wanted to listen to what he had to say... and then Penny interrupts him asking if she can see her. Leonard feels neglected again. Dr Gallo has agreed to see her.

Howard and Bernadette are cleaning out Stuart's old bedroom and start to wonder if they are going to turn it into a home theater, game room or a man-cave. Bernadette suggests a woman-cave or a home office. She then finds a stuffed bear that Stuart had won since they couldn't guess his age. Both wondered how he was doing since he hadn't called. He could have done that. First they deny it and then Bernadette realizes that: "Ewww, we are missing him!"

Raj and Sheldon return to his apartment and are talking about naming their discovery. Sheldon suggests "Koo" from Koothrappali and "per' from Cooper for Kooper. Raj adds that at least he would know what the K stood for. Returning to the asteroid, Leonard suggests that they name it after their girlfriends to show them how much they care about them. Sheldon thinks about it, feeling that that is romantic and would get them out of giving Valentine's Day presents forever. He suggests "AM" for Amy and "Y" for Emily or Amy. Raj is not impressed.

Penny finishes her pill pitch about anxiety medicine to Dr. Gallo and asks her if she has any questions. She wants to know why she made Leonard pretend to be a patient. What were you thinking? Penny quietly tells her that she was talking about the drugs. Then the doctor asks why she would marry Leonard. Leonard was raised by an overbearing woman during his formative years. Is he continuing that by marrying a woman like Penny? Penny replies that she used to wear a lot of tank tops.

Sheldon is again Skyping with Amy. He called her an asteroid. Amy doesn't understand. Sheldon explains that they discovered one and named it after her (After negotiating with him that he would name his firstborn Rajesh, even if it's a girl). She doesn't seem enthusiastic about having to name all their children Raj, even the girls.

Penny is now on the couch with Dr. Gallo saying that how can she not be like his mother since he has all these toys (Including a stuffed Wookie in the room they have sex in.) Penny thinks that she is turning her into his mother. She used to be an actress and a pretty good one. Hot, girl-next-door type. Doable. Not only is she his mother, but they have a man-child living with him named Sheldon. Dr. Gallo says that Leonard mentioned him a lot and she didn't even think he was real. He is as real as the fines he gives Penny for using too much toilet paper. Penny admits that Leonard was right that talking things out with her helped. Dr. Gallo gives Penny a prescription to help her through her anxiety issues. She suggested Penny take some, but she did not want the product that might give her fits of homicidal rage.

Sheldon misses Amy. Amy misses Sheldon. Howard and Bernadette miss Stuart. Penny misses when life was simpler. Leonard is skipping rope with some little girls because one decides to do what makes one happy, not their controlling mothers.

Title reference: Leonard posing as a patient to help Penny's pharmaceutical sales