LORELAI: Oooh – Oompa-Loompas!
RORY: My mom has a thing for the Oompa-Loompas.
LORELAI: I don’t think finding them amusing constitutes a thing.
RORY: No, but having a recurring dream about marrying one does.
In Willy Wonka & The Chocolate Factory, the Oompa-Loompas are small humans who work in Willy Wonka’s factory. Played by actors with dwarfism, they have orange skin and green hair, and wear baggy white overall shorts.
Lorelai’s rich dream life was an ongoing feature throughout the run of Gilmore Girls. Perhaps in this case the dreams were brought on by the feeling that she was “married” to Rory, by choosing her over a man (as the Oompa-Loompas are child-sized).