Determined to help the glassy-eyed Daniel (James Franco) pass his algebra test, Lindsay (Linda Cardellini) holds an impromptu study session at her house. Feeling a bit mentorly himself, Daniel decides to give Lindsay's sex-ed-frustrated brother Sam (John Daley) some lessons in the reproductive sciences, courtesy of a porno reel. When Lindsay's tutorial fails to take, however, Daniel resorts to his usual study method -- cheating -- and, fed up with her math teacher, Mr. Kowchevski (Steve Bannos), Lindsay aids and abets his delinqent ways with dire results. Meanwhile, Sam and the Geeks gather to watch their loaner stag film -- and the newfound carnal knowledge leaves each Geek with a wildly different impression of the opposite sex. ~ Michael Hastings, Rovi