On an all-new How I Met Your Mother, Marshall and Lily catch baby fever and decide that they're ready to have a child. However, with Marshall working late, Lily finds herself having doubts, so she enlists Ted and Robin to argue for and against having children. As the two argue, Lily drinks and drinks, and eventually drunkenly goes down to Marshall's office to confront the situation face to face. Meanwhile, Barney survives a paternity scare and, in his excitement, creates a new holiday for all men who aren't fathers: Not a Father's Day.

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