Season 5: Episode 116: The One Where Ross Can't Flirt
Ross discovers he can't flirt when he tries to pick up the pizza delivery girl. Meanwhile, Joey lands a part on Law & Order, and has his grandmother over to Monica and Rachel's apartment to watch the SHOW when it airs. However, as the show progresses, it becomes clear that Joey's performance has been entirely cut out. Frantically, Joey shoots a homemade video and pops it into the VCR at the end of the Law & Order SHOW to spare his grandma from the truth.