Wiktionary
brady bunch
n. 1 A large number of children in a family; a large family. 2 Children in a family who are from previous partnerships of the parents; a family that includes children from previous partnerships of the parents.
Usage examples of "brady bunch".
The young go to the theaters, and they see The Fugitive (at best) or The Beverly Hillbillies, Dennis the Menace, The Flintstones, Super Mario Brothers, Maverick, The Brady Bunch, The Addams Family, Lassie, or The Jetsons (have I missed anything, if so, fill in the blanks).
I think there's an episode of The Brady Bunch where Greg doesn't return it and gets a huge library fine .