Although I don't recommend trying any of these, apparently these specials are real! Found from here . ***** In-N-Out Burger has a secret unpublished menu for insiders who are In-The-Know. Next time you're at In-N-Out (i.e. tomorrow . . . or maybe tonight), order a bag of these off-the-menu specials: "3-by-3" = three meat patties and three slices of cheese. "4-by-4" = four meat patties and four slices of cheese. "2-by-4" = two meat patties and four slices of cheese. *Note: You can get a burger with as many meat patties or cheese slices as you want. Just tell the In-N-Out Burger cashier how many meat patties and how much cheese you want and that is what you'll get! For instance, if you want 6 pieces of meat and 10 pieces of cheese tell them you want a "6-by-10." "Double Meat" = like a Double Double without cheese. "3 by Meat" = three meat patties and no cheese. "Animal Style" = the meat is cooked and fried