The Big Bang Theory: The Agreement Dissection
The girls take Sheldon dancing while Priya, as a experienced lawyer, attempts to break apart 'the roommate agreement'.
Leonard Hofstadter: No offense, but shower sex with you is now the second best thing that's happened today.
Sheldon Cooper: Need I remind you not a lot of scientific discoveries were made by people having a good time?
Sheldon Cooper: In the South, preadolescent children are forced through a process called cotillion, which indoctrinates them with all the social graces and dance skills needed to function in 18th century Vienna.
Goof (continuity error): In this episode, Sheldon revealed that he is proficient in several dance forms. However, he had told Penny before, "Penny, while I subscribe to the Many Worlds Theory, which posits the existence of an infinite number of Sheldons in an infinite number of universes, I assure you that in none of them am I dancing.".
When Sheldon is out on the town with the girls, he states that he has never been kissed by a girl before, except his mother, sister and grandmother. This is not true, as he was kissed by Leonard's mother while she was drunk in an earlier season.