In-N-OutMelted Cheese layed over a delicious basket of FriesCheeseFriesJust ask for "Cheese Fries" and you shall receive the magical cheesy fries!All Locations6 - High$3.10http://hackthemenu.com/five-guys/secret-menu/cheese-fries/The " Cheese Fries " are reportedly on the Five Guys Secret Menu. Since the burgers at Five Guys are so customizable, there aren't many secret menu hacks out there for them. But when it comes to french fries, they have two kinds on the menu - five guys style or cajun style. Well, what if you wanted some cheese on your fries? You may be in luck! Five Guys Cheese Fries are reportedly on the secret menu at some locations. You may be one of the lucky few that get cheese fries, however, they aren't available at most locations. But if your Five Guys does in fact make them, then don't miss out on the cheesy goodness. Be sure to check out the Five Guys Secret Menu as well as visiting our home page to check out the complete list of All the Secret Menus from all your favorite restaurants!