Leonard & Penny go out as friends. Leonard tells her that he often pretended to like her choice of movies & social activities because he wanted sex. Now that they are just friends he makes her pay for her own ticket.
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Amy makes fun of Sheldon because he is a theoretical physicist and not an experimental one. She jokes about confounding variables.
Sheldon was told by the university that he needs to take a sexual harassment seminar online.
Raj explains to the girls that if he continues to feed his dog foie gras she is going to die.
The guys discuss the choice between downloading comic books online v coming into the store.