At one point one of the sisters is reading an Almanac for the years 1950 to 2000, "by Biff" on the cover. It looks like the Almanac in the movie BACK TO THE FUTURE 2, which Marty McFly buys in the year 2015, and later is found by old Biff Tannen.
The title "Brawl in the Family" is a parody of the 1970's sitcom "All in the Family".
It seems that Leni brought the dress first, as she already had it on when Lori returned home from shopping.
Lynn, Lana, Lola, Lisa and Luan begin whistling innocently and casually while backing away slowly during Lori and Leni's argument. It's revealed that Lynn, Lana, Lola, Lisa and Luan really know how to whistle.