RORY: So, what are you doing Saturday?
DEAN: Just my usual chores.
RORY: Your usual chores, John-boy?
Rory refers to The Waltons, previously discussed (and mentioned as using the same set as the Dragonfly inn). John “John-boy” Walton, played by Richard Thomas, was the eldest son of the family, and the protagonist of the series.
Rory seems to think the word “chores” sounds very rural and folksy. Unlike Dean, Rory doesn’t have regular chores – as it’s just she and Lorelai (and they both have work/school), she takes an almost equal share of the household tasks. It’s never made clear how Lorelai and Rory divide up jobs around the house, but they’re rarely shown arguing about it or even discussing it, and they have a relaxed approach in any case.
The Annotated Gilmore Girls 