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Big Bang Theory Season 3 Episode 20

Season 3 Episode 21 The Plimpton Stimulation

Dr. Elizabeth Plimpton (Judy Greer), a Princeton University physicist cosmological comes to Cal Tech for a job interview. Sheldon organizes his journey, and asked him to stay in bed (with Sheldon sleep on the couch), rather than a hotel which he perceives as less hospitable. Leonard tries to impress him by speaking of his work, but she is interested in having sex with Leonard, he warmly welcomed. The next morning, Sheldon is totally unaware of what happened during the night, but Penny immediately detects what happened to Leonardo and the body language of Elizabeth, and became jealous, because she has broken with Leonard too long. Later that day, the cafeteria at Cal Tech, Dr. Raj Plimpton meeting and wants to bed, too. That night, Howard and Leonard come to Raj’s apartment for Halo night and found Elizabeth, she suggests having sex with three guys, but Raj manages to lock the other two out of the apartment. At the end of the show, Leonard and Penny discuss whether or not he needs to explain what happened to Penny. Although Penny continues to insist he did not need to explain anything, Leonard says he had sex with Mr. Plimpton, “because it” left [him]