Leonard's mother Beverly begins talking to Penny as a friend and confidant, troubling Leonard, especially when he learns that Beverly told Penny that she was proud of her, a level of praise she never bestowed upon Leonard himself. On the way home, Howard does a good job coaching Sheldon to drive them home, for which Sheldon tells him he will be a good teacher to his son. He and Sheldon go out in the desert to test launch a model rocket, but it explodes, causing him further doubt. Howard and Bernadette learn their second child will be a boy, leading Howard to doubt whether he can be a good father to a son.

Teleplay byРІР‚Р‰: Steve Holland & Eric Kaplan & Jeremy Howe Story byРІР‚Р‰: Bill Prady & Maria Ferrari & Tara Hernandez Title reference: Sheldon trying to embrace the relaxed side of his personality. While she likes them both as friends, she does not want a relationship with anyone. Meanwhile, Raj and Stuart both become interested in Bernadette's new coworker Ruchi. He decides to leave all the wedding planning to Amy. Amy and Penny believe that his subconscious mind is trying to tell him to be more relaxed his attempt to be so while wearing flip-flops ends in disaster. Sheldon cannot find the perfect wedding date and begins talking in his sleep, adopting the persona of a laid-back person who goes with the flow. Teleplay byРІР‚Р‰: Maria Ferrari & Andy Gordon & Tara Hernandez

Story byРІР‚Р‰: Chuck Lorre & Steve Holland & Adam Faberman Title reference: Leonard's depression while writing a retraction of his statements on the radio. While bragging to each other, they end up arguing which of their fields is better. Meanwhile, Amy and Bernadette agree with each other to keep quiet about the success in their careers so as not to upset Sheldon and Howard. Leonard accidentally sends a drunken email to Human Resources, which bemuses Mrs. Getting drunk with Penny, the men go to the grave of Richard Feynman and realize there is hope for physics as long as they believe in it. Penny asks Howard and Raj come over and help the two but end up just as depressed. The university is furious and, while trying to think of reasons to put in a retraction, he depresses Sheldon into thinking he might be right. Leonard gives an interview on public radio where he admits physics research might be at a dead end. Teleplay byРІР‚Р‰: Dave Goetsch & Eric Kaplan & Anthony Del Broccolo Story byРІР‚Р‰: Steven Molaro & Steve Holland & Maria Ferrari Title reference: Sheldon's proposal of marriage They attempt to convince Leonard and Penny to have a child as well, but are rebuffed. She and Howard are not thrilled at the idea of having another baby so soon after their first.

Bernadette is shocked to realize that she is pregnant again. With help from Stephen Hawking, Sheldon later comes to grips with the fact that he will not always be the center of attention in the marriage. However, when dining with Amy's colleagues later that night, Sheldon is offended that they are more impressed with Amy's work than his own. Teleplay byРІР‚Р‰: Steve Holland & Maria Ferrari & Tara HernandezР”Р„my enthusiastically accepts Sheldon's marriage proposal. Story byРІР‚Р‰: Chuck Lorre & Eric Kaplan & Jeremy Howe See also: List of The Big Bang Theory episodes No.

Pamela Adlon as Halley Wolowitz ( voice only).

Dean Norris as Colonel Richard Williams.

Big bang theory s12 e14