and a partridge in a pear tree

A phrase used humorously at the end of a list, as in the song "The Twelve Days of Christmas." A: "Do you think you'll be able to remember everything?" B: "Oh sure, you just want me to pick up butter, eggs, shampoo, conditioner, bread, turkey burgers, and a partridge in a pear tree. Yes, I think I've got it." Who all is coming to the party? Well, let's see—John, Luis, Ray, Eric, Divya, Leanne, and a partridge in a pear tree. A: "How many people are we expected to feed on Thanksgiving? Your mom and dad, my mom and dad, Grandma and Grandpa, Nanny and Pop, Aunt Ethel, Uncle Lou, and a partridge in a pear tree?" B: "Yeah, pretty much."