LUKE: Dessert? …
LORELAI: And whipped cream.
The Gilmore girls always have cherry pie for dessert on Wednesday nights, which Luke knows by heart by now. He seems to forget in this episode, either to tease them, or because having to do an emergency shop because Jess forgot to do the ordering has put it out of his mind. Whipped cream is apparently their preferred topping.
The rest of their dinner order is for cheeseburgers and Tater Tots, previously discussed.