I Love Lucy: Season 4, Episode 3

4 - 3: Lucy Cries Wolf

Lucy cries wolf once too often when she decides to see whether Ricky would come to her aid in an emergency. He assures her that he'd rush home from the club "between the 'baba' and the 'lu' " if she were in danger, but that's not enough reassurance for her, and soon she's in a precarious position.