The Big Bang Theory: Season 4, Episode 5

4 - 5: The Desperation Emanation

When Amy Farrah Fowler asks Sheldon to meet her mother, he starts to get worried, as Leonard tells him that meeting Amy's mother would mean she is his girlfriend (which he denied up to that point by referring to Amy as a "girl" and a "friend"). He freaks out and tries to "break up" with her. When she tells him it is only to please her mother, and that she doesn't actually want to be his girlfriend, Sheldon is relieved. He goes along with her idea and tells Amy's mother via webcam that he is having regular intercourse with her daughter, which freaks her out just like Amy wanted it to. Sheldon then asks Amy if they actually should have sex, before adding "Bazinga!". Meanwhile, Leonard has his own problems. Frustrated by the fact that Howard has Bernadette, Sheldon has Amy, Stuart has a woman he met at Comic-Con, and Raj claims to have a girlfriend who is