| Description! ||Leonard suddenly becomes worried when he learns his mother, accomplished psychiatrist and neuroscientist Dr. Beverly Hofstadter (Christine Baranski), is coming to visit. Upon arriving at the building, Beverly meets Penny, and by the time they reach Leonard’s apartment, Penny is in tears after having her childhood issues psychoanalysed. Sheldon, on the other hand, instantly develops a comfortable relationship with Leonard’s mother, who turns out to be as strict and logical as himself.
Howard and Raj also meet Beverly, but after learning that Howard still lives with his mother and that Raj can’t speak to women, she is quick to declare that they are in an "ersatz homosexual marriage". Later, Leonard goes to talk to Penny, and they both seek comfort in each other, discussing their respective childhood issues with their parents. As they become drunk, Penny and Leonard are about to have sex, but Leonard ruins the moment by using psychology and noting that he is having sex with his mom and she with her dad. Disgusted, Penny throws Leonard out of the apartment.|