Reply To: Replacement idiom for "when the fat lady sings" Home › Forums › Humor & Entertainment › Replacement idiom for "when the fat lady sings" › Reply To: Replacement idiom for "when the fat lady sings" July 27, 2015 3:38 pm at 3:38 pm #1134843 feivelParticipant I watch my wife. When awaiting warm brownies, my interest is engaged.