McDonald's customers have been using a custom ordering hack to recreate In-N-Out's famous double-double "animal style" burger. The burger, which includes grilled onions and pickles, is topped with the restaurant's famous spread, which is reminiscent of a Thousand Island-style dressing. The hack involves adding extra pickles and grilled onions to the McDonald's Double Cheeseburger. However, customers should order these items during less busy hours. Additionally, fans have been able to replicate In-In-Out’s famous Animal Style fries by ordering McDonald’�s fries with American cheese, onions and Big Mac Sauce.