When Linda is explaining to Annie who they all are, she goes from Gayle to Tina and back again saying "my sister, my daughter, my sister, my daughter," at which point Gayle slaps her. This is a slapstick homage to the famous scene from Chinatown.
Store next door: A Small Price Toupee: Discount Hair Pieces
Burger of the Day: This Is What It Sounds Like When Cloves fry Burger (with fried garlic cloves)
Exterminator: Mite Club
Evidently Linda confuses Snoopy and Marmaduke.