This is rfom a "tacky party" site:
•food you have asked them to bring themselves. If this is the case, you cook nothing.
•basically whatever's around. Leftovers from the past couple of days are great. Just microwave (or don't) and throw them on the table.
•anything in a 9 x 13 dish with a piece or spoonful missing.
•any food with the word "product" on the label, such as "pasteurized prepared cheese product."
•anything in an aerosol can (whipped topping, Cheez Whiz). This can double as a vehicle for entertainment later.
•any kind of highly processed protein in a can (like potted meat).
And this from a "trashy" party website:
For a White Trash party, you need the essentials: squirt cheese, Ritz crackers, canned bean dip and Spam. Then round it out with a few casseroles (the ever-popular tuna-noodle with potato chips crushed on top, or some monstrosity I found in an old cookbook that is basically frozen tater tots baked with cream of mushroom soup), deviled eggs (especially if the eggs are torn/misshapen), at least O. Jello-mold (with fruit/colored marshmallows inside), generic soda, wine-in-a-box and cheap beer. Desserts can be some kind of Nilla Wafer/Cool Whip concoction, cakes with cold cereal decor, Rice Krispies treats, or, my favorite, the Ritz Cracker Mock Apple Pie. (Grape Nuts pudding might be a little difficult to serve at a party... save that for a special dinner for two.) Serve everything on mismatched paper plates and plastic trays, natch. Garnish with half-used condiments straight from the fridge. Flimsy plastic tablecloths are a nice touch.